Scope
TPDB 3D structure viewers are intended for standard-residue peptide models. This library records individual noncanonical amino acid building blocks as 2D molecules rather than predicting modified peptide 3D structures.
Noncanonical Amino Acids
Unnatural amino acid library
A source-linked library integrating HighPlay2, SwissSidechain, RCSB CCD, and PubChem reference records.
272
unique database-mapped entries
60 HighPlay2 / 172 SwissSidechain / 40 PubChem
Data provenance
The 60-residue selection and study labels come from HighPlay2 Supplementary Table S1 and Supplementary Data 1. CCD identity, formula, formula weight, parent mapping, and 2D depictions are linked to the RCSB PDB Chemical Component Dictionary. The 172 SwissSidechain-derived entries use names, family assignments, SMILES, molecular weights, MOL2 atom records, and 2D depictions from the SIB SwissSidechain database, with individual source links. The 40 PubChem reference entries use PubChem identity records, formulae, formula weights, source links, and 2D depictions. Commercial availability is reported by the source resources and is not independently verified by TPDB.
Browse by type
Noncanonical amino acid classes
Showing all 272 entries
D-amino acids
19 entries
D-Ala
D-Alanine
D-丙氨酸
The D stereoisomer of alanine; D-residue substitution is used to reduce protease susceptibility.
- Formula
- C3H7NO2
- Formula weight
- 89.09 Da
- Parent residue
- Not provided by PubChem
Sources
D-Arg
D-Arginine
D-精氨酸
A guanidinium-bearing arginine residue with D stereochemistry for cationic peptide design.
- Formula
- C6H14N4O2
- Formula weight
- 174.20 Da
- Parent residue
- Not provided by PubChem
Sources
D-Lys
D-Lysine
D-赖氨酸
A lysine residue with D stereochemistry that retains a basic, positively charged side chain.
- Formula
- C6H14N2O2
- Formula weight
- 146.19 Da
- Parent residue
- Not provided by PubChem
Sources
D-Phe
D-Phenylalanine
D-苯丙氨酸
An aromatic phenylalanine residue with D stereochemistry, used in stability-oriented peptide design.
- Formula
- C9H11NO2
- Formula weight
- 165.19 Da
- Parent residue
- Not provided by PubChem
Sources
D-Trp
D-Tryptophan
D-色氨酸
An indole-bearing tryptophan residue with D stereochemistry for membrane-interacting peptide design.
- Formula
- C11H12N2O2
- Formula weight
- 204.22 Da
- Parent residue
- Not provided by PubChem
Sources
D-Asn
D-Asparagine
D-天冬酰胺
The D stereoisomer of asparagine, retaining its neutral carboxamide side chain.
- Formula
- C4H8N2O3
- Formula weight
- 132.12 Da
- Parent residue
- Not provided by PubChem
Sources
D-Asp
D-Aspartic acid
D-天冬氨酸
The D stereoisomer of aspartic acid, retaining an acidic side-chain carboxyl group.
- Formula
- C4H7NO4
- Formula weight
- 133.10 Da
- Parent residue
- Not provided by PubChem
Sources
D-Cys
D-Cysteine
D-半胱氨酸
The D stereoisomer of cysteine, retaining a reactive thiol side chain.
- Formula
- C3H7NO2S
- Formula weight
- 121.16 Da
- Parent residue
- Not provided by PubChem
Sources
D-Gln
D-Glutamine
D-谷氨酰胺
The D stereoisomer of glutamine, retaining its neutral side-chain carboxamide.
- Formula
- C5H10N2O3
- Formula weight
- 146.14 Da
- Parent residue
- Not provided by PubChem
Sources
D-Glu
D-Glutamic acid
D-谷氨酸
The D stereoisomer of glutamic acid, retaining an acidic side-chain carboxyl group.
- Formula
- C5H9NO4
- Formula weight
- 147.13 Da
- Parent residue
- Not provided by PubChem
Sources
D-His
D-Histidine
D-组氨酸
The D stereoisomer of histidine, retaining an imidazole side chain.
- Formula
- C6H9N3O2
- Formula weight
- 155.15 Da
- Parent residue
- Not provided by PubChem
Sources
D-Ile
D-Isoleucine
D-异亮氨酸
The D stereoisomer of isoleucine with a branched hydrophobic side chain.
- Formula
- C6H13NO2
- Formula weight
- 131.17 Da
- Parent residue
- Not provided by PubChem
Sources
D-Leu
D-Leucine
D-亮氨酸
The D stereoisomer of leucine with a branched hydrophobic side chain.
- Formula
- C6H13NO2
- Formula weight
- 131.17 Da
- Parent residue
- Not provided by PubChem
Sources
D-Met
D-Methionine
D-甲硫氨酸
The D stereoisomer of methionine, retaining its thioether-containing side chain.
- Formula
- C5H11NO2S
- Formula weight
- 149.21 Da
- Parent residue
- Not provided by PubChem
Sources
D-Pro
D-Proline
D-脯氨酸
The D stereoisomer of proline, with its characteristic cyclic secondary amine backbone.
- Formula
- C5H9NO2
- Formula weight
- 115.13 Da
- Parent residue
- Not provided by PubChem
Sources
D-Ser
D-Serine
D-丝氨酸
The D stereoisomer of serine, retaining a hydroxymethyl side chain.
- Formula
- C3H7NO3
- Formula weight
- 105.09 Da
- Parent residue
- Not provided by PubChem
Sources
D-Thr
D-Threonine
D-苏氨酸
The D stereoisomer of threonine, retaining a beta-hydroxylated side chain.
- Formula
- C4H9NO3
- Formula weight
- 119.12 Da
- Parent residue
- Not provided by PubChem
Sources
D-Tyr
D-Tyrosine
D-酪氨酸
The D stereoisomer of tyrosine, retaining its phenolic aromatic side chain.
- Formula
- C9H11NO3
- Formula weight
- 181.19 Da
- Parent residue
- Not provided by PubChem
Sources
D-Val
D-Valine
D-缬氨酸
The D stereoisomer of valine with a compact, branched hydrophobic side chain.
- Formula
- C5H11NO2
- Formula weight
- 117.15 Da
- Parent residue
- Not provided by PubChem
Sources
Conformationally restricted
10 entries
CCD 004
HighPlay2
Phenylglycine
苯甘氨酸
A noncanonical residue with altered backbone or side-chain geometry for peptide design.
- Formula
- C8H9NO2
- Formula weight
- 151.163 Da
- Parent residue
- Not assigned
Sources
CCD AIB
Aib
HighPlay2
2-aminoisobutyric acid
2-氨基异丁酸
An achiral alpha,alpha-disubstituted amino acid associated with restricted, helix-favoring conformations.
- Formula
- C4H9NO2
- Formula weight
- 103.120 Da
- Parent residue
- ALA
Sources
CCD CHG
HighPlay2
Cyclohexylglycine
环己基甘氨酸
A noncanonical residue with altered backbone or side-chain geometry for peptide design.
- Formula
- C8H15NO2
- Formula weight
- 157.210 Da
- Parent residue
- Not assigned
Sources
CCD PCA
HighPlay2
5-oxoproline (pyroglutamic acid)
5-氧代脯氨酸（焦谷氨酸）
A noncanonical residue with altered backbone or side-chain geometry for peptide design.
- Formula
- C5H7NO3
- Formula weight
- 129.114 Da
- Parent residue
- GLN
Sources
CCD TBG
HighPlay2
tert-Leucine (3-methylvaline)
叔亮氨酸（3-甲基缬氨酸）
A noncanonical residue with altered backbone or side-chain geometry for peptide design.
- Formula
- C6H13NO2
- Formula weight
- 131.173 Da
- Parent residue
- VAL
Sources
Ac3c
1-Aminocyclopropane-1-carboxylic acid
1-氨基环丙烷-1-羧酸
An achiral cyclopropane alpha-amino acid that fixes the alpha-carbon substituents in a compact geometry.
- Formula
- C4H7NO2
- Formula weight
- 101.10 Da
- Parent residue
- Not provided by PubChem
Sources
L-Pip
L-Pipecolic acid
L-哌啶-2-羧酸
A six-membered cyclic imino acid and ring-expanded homolog of proline.
- Formula
- C6H11NO2
- Formula weight
- 129.16 Da
- Parent residue
- Not provided by PubChem
Sources
L-Tic
L-Tetrahydroisoquinoline-3-carboxylic acid
L-1,2,3,4-四氢异喹啉-3-羧酸
A rigid cyclic aromatic amino acid used to restrict peptide backbone and side-chain geometry.
- Formula
- C10H11NO2
- Formula weight
- 177.20 Da
- Parent residue
- Not provided by PubChem
Sources
Ac4c
1-Aminocyclobutane-1-carboxylic acid
1-氨基环丁烷-1-羧酸
An achiral alpha,alpha-disubstituted cyclic amino acid with a four-membered ring.
- Formula
- C5H9NO2
- Formula weight
- 115.13 Da
- Parent residue
- Not provided by PubChem
Sources
Ac5c
Cycloleucine
环亮氨酸
An achiral alpha,alpha-disubstituted cyclic amino acid with a five-membered ring.
- Formula
- C6H11NO2
- Formula weight
- 129.16 Da
- Parent residue
- Not provided by PubChem
Sources
Side-chain analogs
22 entries
CCD 0A1
HighPlay2
O-methyl-L-tyrosine
O-甲基-L-酪氨酸
A noncanonical analog of tyrosine included in the HighPlay2 design alphabet.
- Formula
- C10H13NO3
- Formula weight
- 195.215 Da
- Parent residue
- TYR
Sources
CCD 4PQ
HighPlay2
5-hydroxy-L-tryptophan
5-羟基-L-色氨酸
A noncanonical analog of tryptophan included in the HighPlay2 design alphabet.
- Formula
- C11H12N2O3
- Formula weight
- 220.225 Da
- Parent residue
- TRP
Sources
CCD ABA
L-Abu
HighPlay2
2-aminobutyric acid
2-氨基丁酸
A small aliphatic amino acid with a side chain one carbon longer than alanine.
- Formula
- C4H9NO2
- Formula weight
- 103.120 Da
- Parent residue
- ALA
Sources
CCD ALC
L-Cha
HighPlay2
beta-cyclohexylalanine
β-环己基丙氨酸
A hydrophobic phenylalanine analog containing a saturated cyclohexyl side chain.
- Formula
- C9H17NO2
- Formula weight
- 171.237 Da
- Parent residue
- ALA
Sources
CCD CIR
L-Cit
HighPlay2
Citrulline
瓜氨酸
A neutral ureido amino acid structurally related to arginine.
- Formula
- C6H13N3O3
- Formula weight
- 175.186 Da
- Parent residue
- ARG
Sources
CCD DAH
HighPlay2
3-hydroxy-L-tyrosine (L-DOPA)
3-羟基-L-酪氨酸（左旋多巴）
A noncanonical analog of tyrosine included in the HighPlay2 design alphabet.
- Formula
- C9H11NO4
- Formula weight
- 197.188 Da
- Parent residue
- TYR
Sources
CCD ESC
HighPlay2
2-amino-4-(ethylthio)butyric acid
2-氨基-4-(乙硫基)丁酸
A noncanonical analog of methionine included in the HighPlay2 design alphabet.
- Formula
- C6H13NO2S
- Formula weight
- 163.238 Da
- Parent residue
- MET
Sources
CCD HOX
HighPlay2
4-amino-L-phenylalanine
4-氨基-L-苯丙氨酸
A noncanonical analog of phenylalanine included in the HighPlay2 design alphabet.
- Formula
- C9H12N2O2
- Formula weight
- 180.204 Da
- Parent residue
- PHE
Sources
CCD HPE
L-hPhe
HighPlay2
Homophenylalanine
高苯丙氨酸
A phenylalanine homolog with one additional methylene group before the phenyl ring.
- Formula
- C10H13NO2
- Formula weight
- 179.216 Da
- Parent residue
- PHE
Sources
CCD HSE
HighPlay2
Homoserine
高丝氨酸
A noncanonical analog of serine included in the HighPlay2 design alphabet.
- Formula
- C4H9NO3
- Formula weight
- 119.119 Da
- Parent residue
- SER
Sources
CCD MSE
HighPlay2
Selenomethionine
硒代蛋氨酸
A noncanonical analog of methionine included in the HighPlay2 design alphabet.
- Formula
- C5H11NO2Se
- Formula weight
- 196.106 Da
- Parent residue
- MET
Sources
CCD NLE
L-Nle
HighPlay2
Norleucine
正亮氨酸
A straight-chain, sulfur-free amino acid commonly used as a methionine analog.
- Formula
- C6H13NO2
- Formula weight
- 131.173 Da
- Parent residue
- LEU
Sources
CCD NVA
HighPlay2
Norvaline
正缬氨酸
A noncanonical analog of valine included in the HighPlay2 design alphabet.
- Formula
- C5H11NO2
- Formula weight
- 117.146 Da
- Parent residue
- VAL
Sources
CCD ORN
L-Orn
HighPlay2
Ornithine
鸟氨酸
A basic non-proteinogenic amino acid whose side chain is one methylene shorter than lysine.
- Formula
- C5H12N2O2
- Formula weight
- 132.161 Da
- Parent residue
- ALA
Sources
CCD PPN
HighPlay2
4-nitro-L-phenylalanine
4-硝基-L-苯丙氨酸
A noncanonical analog of phenylalanine included in the HighPlay2 design alphabet.
- Formula
- C9H10N2O4
- Formula weight
- 210.187 Da
- Parent residue
- PHE
Sources
CCD UN1
HighPlay2
L-alpha-aminoadipic acid
L-α-氨基己二酸
A noncanonical amino acid included in the HighPlay2 design alphabet.
- Formula
- C6H11NO4
- Formula weight
- 161.156 Da
- Parent residue
- Not assigned
Sources
1-Nal
1-Naphthyl-L-alanine
1-萘基-L-丙氨酸
A bulky aromatic alanine analog containing a 1-naphthyl side chain.
- Formula
- C13H13NO2
- Formula weight
- 215.25 Da
- Parent residue
- Not provided by PubChem
Sources
L-hArg
L-Homoarginine
L-高精氨酸
An arginine homolog with one additional methylene group in the side chain.
- Formula
- C7H16N4O2
- Formula weight
- 188.23 Da
- Parent residue
- Not provided by PubChem
Sources
2-Nal
2-Naphthyl-L-alanine
2-萘基-L-丙氨酸
A bulky aromatic alanine analog containing a 2-naphthyl side chain.
- Formula
- C13H13NO2
- Formula weight
- 215.25 Da
- Parent residue
- Not provided by PubChem
Sources
L-Dap
L-alpha,beta-Diaminopropionic acid
L-α,β-二氨基丙酸
A short-chain diamino amino acid with an additional amino group on the beta carbon.
- Formula
- C3H8N2O2
- Formula weight
- 104.11 Da
- Parent residue
- Not provided by PubChem
Sources
L-Dab
L-2,4-Diaminobutyric acid
L-2,4-二氨基丁酸
A basic diamino amino acid whose side chain is one methylene shorter than ornithine.
- Formula
- C4H10N2O2
- Formula weight
- 118.13 Da
- Parent residue
- Not provided by PubChem
Sources
L-Bip
L-Biphenylalanine
L-联苯丙氨酸
A bulky hydrophobic phenylalanine analog bearing a para-linked second phenyl ring.
- Formula
- C15H15NO2
- Formula weight
- 241.28 Da
- Parent residue
- Not provided by PubChem
Sources
Aromatic analogs
85 entries
0AF
SwissSidechain
7-hydroxy-L-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C11H12N2O3
- Formula weight
- 220.22 Da
- Parent residue
- TRP
Sources
0BN
SwissSidechain
4-carbamimidoyl-L-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H14N3O2
- Formula weight
- 209.25 Da
- Parent residue
- PHE
![2D structure of 3-(4H-thieno[3,2-b]pyrrol-6-yl)-L-alanine](/static/peptides/uaa/swisssidechain/32T.png?v=uaa-swisssidechain-20261009)
32T
SwissSidechain
3-(4H-thieno[3,2-b]pyrrol-6-yl)-L-alanine
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C9H10N2O2S
- Formula weight
- 210.25 Da
- Parent residue
- TRP
Sources
3CF
SwissSidechain
3-cyano-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H10N2O2
- Formula weight
- 191.21 Da
- Parent residue
- PHE
3FG
SwissSidechain
(2S)-amino(3,5-dihydroxyphenyl)-ethanoic acid
A SwissSidechain non-natural amino acid assigned to the phenylglycine-derivative reference family.
- Formula
- C8H9NO4
- Formula weight
- 184.17 Da
- Parent residue
- Phg
Sources
3MY
SwissSidechain
3-Chloro-tyrosine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H10ClNO3
- Formula weight
- 216.64 Da
- Parent residue
- PHE
Sources
4CF
SwissSidechain
4-cyano-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H10N2O2
- Formula weight
- 191.21 Da
- Parent residue
- PHE
Sources
4FW
SwissSidechain
4-fluoro-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C11H11FN2O2
- Formula weight
- 223.22 Da
- Parent residue
- TRP
Sources
4HMP
SwissSidechain
4-hydroxymethyl-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H13NO3
- Formula weight
- 196.22 Da
- Parent residue
- PHE
4HT
SwissSidechain
4-hydroxy-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C11H12N2O3
- Formula weight
- 220.22 Da
- Parent residue
- TRP
Sources
4IN
SwissSidechain
4-amino-L-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C11H13N3O2
- Formula weight
- 220.25 Da
- Parent residue
- TRP
Sources
4PH
SwissSidechain
4-methyl-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H13NO2
- Formula weight
- 180.22 Da
- Parent residue
- PHE
Sources
6CW
SwissSidechain
6-chloro-L-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C11H11ClN2O2
- Formula weight
- 238.67 Da
- Parent residue
- TRP
ANTH
SwissSidechain
3-(9-anthryl)-alanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C17H15NO2
- Formula weight
- 266.31 Da
- Parent residue
- PHE
Sources
APD
SwissSidechain
3-Methyl-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H13NO2
- Formula weight
- 180.22 Da
- Parent residue
- PHE
APM
SwissSidechain
M-amidinophenyl-3-alanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H14N3O2
- Formula weight
- 209.25 Da
- Parent residue
- PHE
Sources
BB8
SwissSidechain
Phenylserine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H11NO3
- Formula weight
- 182.20 Da
- Parent residue
- PHE
Sources
BCS
SwissSidechain
Benzylcysteine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H13NO2S
- Formula weight
- 212.29 Da
- Parent residue
- PHE
Sources
BTH3
SwissSidechain
3-(3-benzothienyl)-alanine
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C11H11NO2S
- Formula weight
- 221.28 Da
- Parent residue
- TRP
Sources
BTR
SwissSidechain
6-bromo-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C11H11BrN2O2
- Formula weight
- 284.13 Da
- Parent residue
- TRP
Sources
CHP
SwissSidechain
3-chloro-4-hydroxy-phenylglycine
A SwissSidechain non-natural amino acid assigned to the phenylglycine-derivative reference family.
- Formula
- C8H8ClNO3
- Formula weight
- 202.62 Da
- Parent residue
- Phg
Sources
CNP2
SwissSidechain
2-cyano-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H10N2O2
- Formula weight
- 191.21 Da
- Parent residue
- PHE
CP24
SwissSidechain
2,4-dichloro-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H9Cl2NO2
- Formula weight
- 235.09 Da
- Parent residue
- PHE
CP34
SwissSidechain
3,4-dichloro-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H9Cl2NO2
- Formula weight
- 235.09 Da
- Parent residue
- PHE
CPG2
SwissSidechain
2-Chloro-phenylglycine
A SwissSidechain non-natural amino acid assigned to the phenylglycine-derivative reference family.
- Formula
- C8H8ClNO2
- Formula weight
- 185.61 Da
- Parent residue
- Phg
Sources
CPG3
SwissSidechain
3-Chloro-phenylglycine
A SwissSidechain non-natural amino acid assigned to the phenylglycine-derivative reference family.
- Formula
- C8H8ClNO2
- Formula weight
- 186.62 Da
- Parent residue
- Phg
Sources
CPG4
SwissSidechain
4-Chloro-phenylglycine
A SwissSidechain non-natural amino acid assigned to the phenylglycine-derivative reference family.
- Formula
- C8H8ClNO2
- Formula weight
- 186.62 Da
- Parent residue
- Phg
Sources
CPH2
SwissSidechain
2-chloro-Phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H10ClNO2
- Formula weight
- 200.64 Da
- Parent residue
- PHE
CTE
SwissSidechain
7-chloro-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C11H11ClN2O2
- Formula weight
- 238.67 Da
- Parent residue
- TRP
Sources
D4P
SwissSidechain
4-Hydroxy-phenylglycine
A SwissSidechain non-natural amino acid assigned to the phenylglycine-derivative reference family.
- Formula
- C8H9NO3
- Formula weight
- 168.17 Da
- Parent residue
- Phg
Sources
DBY
SwissSidechain
3,5-dibromotyrosine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H9Br2NO3
- Formula weight
- 339.99 Da
- Parent residue
- PHE
Sources
DIPH
SwissSidechain
3,3-diphenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C15H15NO2
- Formula weight
- 242.29 Da
- Parent residue
- PHE
Sources
DMP3
SwissSidechain
3-ethyl-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C11H15NO2
- Formula weight
- 194.25 Da
- Parent residue
- PHE
Sources
F2F
SwissSidechain
3,4-Difluoro-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H9F2NO2
- Formula weight
- 202.18 Da
- Parent residue
- PHE
Sources
FCL
SwissSidechain
3-chloro-Phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H10ClNO2
- Formula weight
- 200.64 Da
- Parent residue
- PHE
FPG2
SwissSidechain
2-Fluoro-phenylglycine
A SwissSidechain non-natural amino acid assigned to the phenylglycine-derivative reference family.
- Formula
- C8H8FNO2
- Formula weight
- 170.16 Da
- Parent residue
- Phg
Sources
FPG3
SwissSidechain
3-Fluoro-phenylglycine
A SwissSidechain non-natural amino acid assigned to the phenylglycine-derivative reference family.
- Formula
- C8H8FNO2
- Formula weight
- 170.16 Da
- Parent residue
- Phg
Sources
FPG4
SwissSidechain
4-Fluoro-phenylglycine
A SwissSidechain non-natural amino acid assigned to the phenylglycine-derivative reference family.
- Formula
- C8H8FNO2
- Formula weight
- 170.16 Da
- Parent residue
- Phg
FPH2
SwissSidechain
2-Fluoro-Phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H10FNO2
- Formula weight
- 184.19 Da
- Parent residue
- PHE
FPH3
SwissSidechain
3-Fluoro-Phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H10FNO2
- Formula weight
- 184.19 Da
- Parent residue
- PHE
FT6
SwissSidechain
6-fluoro-L-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C11H11FN2O2
- Formula weight
- 223.22 Da
- Parent residue
- TRP
Sources
HQA
SwissSidechain
3-(8-hydroxyquinolin-3-yl)-L-alanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C12H12N2O3
- Formula weight
- 233.24 Da
- Parent residue
- PHE
Sources
HTR
SwissSidechain
Beta-hydroxy-tryptophane
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C11H12N2O3
- Formula weight
- 221.23 Da
- Parent residue
- TRP
Sources
IYR
SwissSidechain
3-iodo-tyrosine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H10INO3
- Formula weight
- 308.09 Da
- Parent residue
- PHE
Sources
KYN
SwissSidechain
Kynurenine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H12N2O3
- Formula weight
- 209.22 Da
- Parent residue
- PHE
Sources
MOT5
SwissSidechain
5-Methoxy-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C12H14N2O3
- Formula weight
- 235.26 Da
- Parent residue
- TRP
Sources
MP34
SwissSidechain
3,4-Dimethyl-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C11H15NO2
- Formula weight
- 193.24 Da
- Parent residue
- PHE
Sources
MPH2
SwissSidechain
2-Methyl-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H13NO2
- Formula weight
- 180.22 Da
- Parent residue
- PHE
MTR5
SwissSidechain
5-Methyl-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C12H14N2O2
- Formula weight
- 219.26 Da
- Parent residue
- TRP
MTR6
SwissSidechain
6-Methyl-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C12H14N2O2
- Formula weight
- 219.26 Da
- Parent residue
- TRP
MTY
SwissSidechain
M-Tyrosine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H11NO3
- Formula weight
- 182.20 Da
- Parent residue
- PHE
NAO1
SwissSidechain
5-hydroxy-1-naphthalene
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C13H13NO3
- Formula weight
- 232.25 Da
- Parent residue
- PHE
Sources
NAO2
SwissSidechain
6-hydroxy-2-naphthalene
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C13H13NO3
- Formula weight
- 232.25 Da
- Parent residue
- PHE
Sources
NIY
SwissSidechain
Meta-nitro-tyrosine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H10N2O5
- Formula weight
- 226.19 Da
- Parent residue
- PHE
Sources
OMX
SwissSidechain
(betar)-beta-hydroxy-L-tyrosine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H11NO4
- Formula weight
- 198.20 Da
- Parent residue
- PHE
Sources
OMY
SwissSidechain
(betar)-3-chloro-beta-hydroxy-L-tyrosine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H10ClNO4
- Formula weight
- 232.64 Da
- Parent residue
- PHE
Sources
OTYR
SwissSidechain
O-Tyrosine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H11NO3
- Formula weight
- 182.20 Da
- Parent residue
- PHE
PBF
SwissSidechain
4-benzoyl-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C16H15NO3
- Formula weight
- 270.30 Da
- Parent residue
- PHE
Sources
PF5
SwissSidechain
Pentafluoro-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H6F5NO2
- Formula weight
- 256.15 Da
- Parent residue
- PHE
Sources
PTR
SwissSidechain
Phosphotyrosine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H11NO6P
- Formula weight
- 262.18 Da
- Parent residue
- PHE
Sources
PYR2
SwissSidechain
3-(2-Pyridyl)-alanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C8H10N2O2
- Formula weight
- 166.18 Da
- Parent residue
- PHE
PYR3
SwissSidechain
3-(3-Pyridyl)-alanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C8H10N2O2
- Formula weight
- 167.19 Da
- Parent residue
- PHE
PYR4
SwissSidechain
3-(4-Pyridyl)-alanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C8H10N2O2
- Formula weight
- 167.19 Da
- Parent residue
- PHE
Sources
QU32
SwissSidechain
3-(2-Quinolyl)-alanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C12H12N2O2
- Formula weight
- 217.24 Da
- Parent residue
- PHE
Sources
QU33
SwissSidechain
3-(3-quinolyl)-alanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C12H12N2O2
- Formula weight
- 217.24 Da
- Parent residue
- PHE
Sources
QU34
SwissSidechain
3-(4-quinolyl)-alanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C12H12N2O2
- Formula weight
- 217.24 Da
- Parent residue
- PHE
Sources
QU35
SwissSidechain
3-(5-Quinolyl)-alanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C12H12N2O2
- Formula weight
- 217.24 Da
- Parent residue
- PHE
Sources
QU36
SwissSidechain
3-(6-Quinolyl)-alanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C12H12N2O2
- Formula weight
- 217.24 Da
- Parent residue
- PHE
Sources
QX32
SwissSidechain
3-(2-quinoxalyl)-alanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C11H11N3O2
- Formula weight
- 218.23 Da
- Parent residue
- PHE
Sources
STYA
SwissSidechain
Styrylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C11H13NO2
- Formula weight
- 192.23 Da
- Parent residue
- PHE
Sources
TBP4
SwissSidechain
4-tert-butyl-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C13H19NO2
- Formula weight
- 222.30 Da
- Parent residue
- PHE
TFG2
SwissSidechain
2-(Trifluoromethyl)-phenylglycine
A SwissSidechain non-natural amino acid assigned to the phenylglycine-derivative reference family.
- Formula
- C9H8F3NO2
- Formula weight
- 220.17 Da
- Parent residue
- Phg
Sources
TFG3
SwissSidechain
3-(Trifluoromethyl)-phenylglycine
A SwissSidechain non-natural amino acid assigned to the phenylglycine-derivative reference family.
- Formula
- C9H8F3NO2
- Formula weight
- 220.17 Da
- Parent residue
- Phg
Sources
TFG4
SwissSidechain
4-(Trifluoromethyl)-phenylglycine
A SwissSidechain non-natural amino acid assigned to the phenylglycine-derivative reference family.
- Formula
- C9H8F3NO2
- Formula weight
- 220.17 Da
- Parent residue
- Phg
Sources
TFP2
SwissSidechain
2-(Trifluoromethyl)-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H10F3NO2
- Formula weight
- 234.19 Da
- Parent residue
- PHE
TFP3
SwissSidechain
3-(Trifluoromethyl)-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H10F3NO2
- Formula weight
- 233.19 Da
- Parent residue
- PHE
TFP4
SwissSidechain
4-(Trifluoromethyl)-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C10H10F3NO2
- Formula weight
- 233.19 Da
- Parent residue
- PHE
TRO
SwissSidechain
2-hydroxy-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C11H12N2O3
- Formula weight
- 221.23 Da
- Parent residue
- TRP
Sources
TRX
SwissSidechain
6-hydroxy-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C11H12N2O3
- Formula weight
- 220.22 Da
- Parent residue
- TRP
Sources
TTQ
SwissSidechain
6-amino-7-hydroxy-L-tryptophan
A SwissSidechain non-natural amino acid assigned to the tryptophan-derivative reference family.
- Formula
- C11H13N3O3
- Formula weight
- 235.24 Da
- Parent residue
- TRP
Sources
TY2
SwissSidechain
3-Amino-L-tyrosine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H12N2O3
- Formula weight
- 197.21 Da
- Parent residue
- PHE
Sources
TYI
SwissSidechain
3,5-diiodotyrosine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H9I2NO3
- Formula weight
- 433.99 Da
- Parent residue
- PHE
Sources
TYQ
SwissSidechain
3-amino-6-hydroxy-tyrosine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H12N2O4
- Formula weight
- 213.21 Da
- Parent residue
- PHE
Sources
WFP
SwissSidechain
3,5-Difluoro-phenylalanine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H9F2NO2
- Formula weight
- 202.18 Da
- Parent residue
- PHE
Sources
YOF
SwissSidechain
3-fluorotyrosine
A SwissSidechain non-natural amino acid assigned to the phenylalanine-derivative reference family.
- Formula
- C9H10FNO3
- Formula weight
- 200.19 Da
- Parent residue
- PHE
Sources
Aliphatic analogs
18 entries
2AG
SwissSidechain
2-Allyl-glycine
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C5H9NO2
- Formula weight
- 116.14 Da
- Parent residue
- ALA
Sources
ACZ
SwissSidechain
Cis-amiclenomycin
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C10H17N2O2
- Formula weight
- 198.26 Da
- Parent residue
- ALA
Sources
ADAM
SwissSidechain
Adamanthane
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C13H21NO2
- Formula weight
- 223.31 Da
- Parent residue
- ALA
Sources
AHP
SwissSidechain
2-Aminoheptanoic acid
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C7H15NO2
- Formula weight
- 146.21 Da
- Parent residue
- ALA
Sources
BIU
SwissSidechain
5-bromo-L-isoleucine
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C6H12BrNO2
- Formula weight
- 211.08 Da
- Parent residue
- ALA
Sources
BUG
SwissSidechain
Tertleucine
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C6H13NO2
- Formula weight
- 132.18 Da
- Parent residue
- ALA
Sources
C2N
SwissSidechain
3-chloro-L-alanine
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C3H6ClNO2
- Formula weight
- 123.54 Da
- Parent residue
- ALA
Sources
CPA3
SwissSidechain
3-Cyclopentyl-alanine
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C8H15NO2
- Formula weight
- 157.21 Da
- Parent residue
- ALA
Sources
DILE
SwissSidechain
Diethylalanine
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C7H15NO2
- Formula weight
- 146.21 Da
- Parent residue
- ALA
Sources
FVAL
SwissSidechain
3-Fluoro-valine
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C5H10FNO2
- Formula weight
- 136.15 Da
- Parent residue
- ALA
Sources
HLEU
SwissSidechain
Homoleucine
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C7H15NO2
- Formula weight
- 145.20 Da
- Parent residue
- ALA
Sources
I2M
SwissSidechain
3-methyl-L-alloisoleucine
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C7H15NO2
- Formula weight
- 146.21 Da
- Parent residue
- ALA
Sources
IGL
SwissSidechain
Alpha-amino-2-indanacetic acid
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C11H13NO2
- Formula weight
- 191.23 Da
- Parent residue
- ALA
Sources
IIL
SwissSidechain
Allo-Isoleucine
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C6H13NO2
- Formula weight
- 132.18 Da
- Parent residue
- ALA
Sources
LEF
SwissSidechain
(4S)-5-fluoro-L-leucine
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C6H12FNO2
- Formula weight
- 150.17 Da
- Parent residue
- ALA
Sources
LVG
SwissSidechain
Vinylglycine
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C4H7NO2
- Formula weight
- 101.10 Da
- Parent residue
- ALA
Sources
OBF
SwissSidechain
(2S)-2-amino-4,4-difluorobutanoic acid
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C4H7F2NO2
- Formula weight
- 140.11 Da
- Parent residue
- ALA
Sources
TFLE
SwissSidechain
5,5,5-Trifluoro-leucine
A SwissSidechain non-natural amino acid assigned to the alanine-derivative reference family.
- Formula
- C6H10F3NO2
- Formula weight
- 186.15 Da
- Parent residue
- ALA
Sources
Acidic and amide analogs
20 entries
26P
SwissSidechain
2-amino-6-oxopimelic acid
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C7H10NO5
- Formula weight
- 189.17 Da
- Parent residue
- ASP
Sources
2AS
SwissSidechain
3-methyl-aspartic acid
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C5H8NO4
- Formula weight
- 147.13 Da
- Parent residue
- ASP
Sources
2NP
SwissSidechain
L-2-amino-6-methylene-pimelic acid
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C8H12NO4
- Formula weight
- 187.19 Da
- Parent residue
- ASP
Sources
3GL
SwissSidechain
4-hydroxy-glutamic-acid
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C5H8NO5
- Formula weight
- 163.13 Da
- Parent residue
- ASP
Sources
6CL
SwissSidechain
6-carboxylysine
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C7H14N2O4
- Formula weight
- 191.21 Da
- Parent residue
- ASP
Sources
AHB
SwissSidechain
Beta-hydroxyasparagine
A SwissSidechain non-natural amino acid assigned to the asparagine-derivative reference family.
- Formula
- C4H8N2O4
- Formula weight
- 149.12 Da
- Parent residue
- ASN
Sources
BHD
SwissSidechain
Beta-hydroxyaspartic acid
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C4H6NO5
- Formula weight
- 148.09 Da
- Parent residue
- ASP
Sources
CCS
SwissSidechain
Carboxymethylated cysteine
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C5H8NO4S
- Formula weight
- 179.19 Da
- Parent residue
- ASP
Sources
DMK
SwissSidechain
3,3-dimethyl aspartic acid
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C6H10NO4
- Formula weight
- 160.15 Da
- Parent residue
- ASP
Sources
FGA4
SwissSidechain
4-Fluoro-glutamic acid
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C5H7FNO4
- Formula weight
- 166.13 Da
- Parent residue
- ASP
Sources
FGL
SwissSidechain
2-amino-propanedioic acid
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C3H4NO4
- Formula weight
- 118.07 Da
- Parent residue
- ASP
Sources
GHG
SwissSidechain
(2s,4s)-2,5-diamino-4-hydroxy-5-oxopentanoic acid
A SwissSidechain non-natural amino acid assigned to the asparagine-derivative reference family.
- Formula
- C5H10N2O4
- Formula weight
- 162.14 Da
- Parent residue
- ASN
Sources
GME
SwissSidechain
5-o-methyl-glutamic acid
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C6H11NO4
- Formula weight
- 162.16 Da
- Parent residue
- ASP
Sources
HGA
SwissSidechain
Glutamine hydroxamate
A SwissSidechain non-natural amino acid assigned to the asparagine-derivative reference family.
- Formula
- C5H10N2O4
- Formula weight
- 163.15 Da
- Parent residue
- ASN
Sources
LME
SwissSidechain
(3R)-3-methyl-L-glutamic acid
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C6H10NO4
- Formula weight
- 161.16 Da
- Parent residue
- ASP
Sources
LMQ
SwissSidechain
3-methyl-L-glutamine
A SwissSidechain non-natural amino acid assigned to the asparagine-derivative reference family.
- Formula
- C6H12N2O3
- Formula weight
- 161.18 Da
- Parent residue
- ASN
Sources
MEG
SwissSidechain
(3S)-3-methyl-L-glutamic acid
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C6H10NO4
- Formula weight
- 161.16 Da
- Parent residue
- ASP
Sources
MEQ
SwissSidechain
N5-methyl-glutamine
A SwissSidechain non-natural amino acid assigned to the asparagine-derivative reference family.
- Formula
- C6H12N2O3
- Formula weight
- 161.18 Da
- Parent residue
- ASN
Sources
SYM
SwissSidechain
2s,4r-4-methylglutamate
A SwissSidechain non-natural amino acid assigned to the aspartate-derivative reference family.
- Formula
- C6H10NO4
- Formula weight
- 161.16 Da
- Parent residue
- ASP
Sources
YCM
SwissSidechain
Cysteine-s-acetamide
A SwissSidechain non-natural amino acid assigned to the asparagine-derivative reference family.
- Formula
- C5H10N2O3S
- Formula weight
- 179.22 Da
- Parent residue
- ASN
Sources
Basic amino acid analogs
17 entries
2HF
SwissSidechain
2-fluoro-L-histidine
A SwissSidechain non-natural amino acid assigned to the histidine-derivative reference family.
- Formula
- C6H9FN3O2
- Formula weight
- 175.16 Da
- Parent residue
- HIS
AGM
SwissSidechain
5-methyl-arginine
A SwissSidechain non-natural amino acid assigned to the arginine-derivative reference family.
- Formula
- C7H17N4O2
- Formula weight
- 190.24 Da
- Parent residue
- ARG
Sources
ARO
SwissSidechain
C-gamma-hydroxy arginine
A SwissSidechain non-natural amino acid assigned to the arginine-derivative reference family.
- Formula
- C6H15N4O3
- Formula weight
- 192.22 Da
- Parent residue
- ARG
Sources
DAB
SwissSidechain
Diaminobutyric acid
A SwissSidechain non-natural amino acid assigned to the lysine-derivative reference family.
- Formula
- C4H11N2O2
- Formula weight
- 119.14 Da
- Parent residue
- LYS
Sources
FUA2
SwissSidechain
(2-furyl)-alanine
A SwissSidechain non-natural amino acid assigned to the histidine-derivative reference family.
- Formula
- C7H9NO3
- Formula weight
- 156.16 Da
- Parent residue
- HIS
GBUT
SwissSidechain
2-Amino-4-guanidinobutryric acid
A SwissSidechain non-natural amino acid assigned to the arginine-derivative reference family.
- Formula
- C5H13N4O2
- Formula weight
- 161.18 Da
- Parent residue
- ARG
Sources
GDPR
SwissSidechain
2-Amino-3-guanidinopropionic acid
A SwissSidechain non-natural amino acid assigned to the arginine-derivative reference family.
- Formula
- C4H11N4O2
- Formula weight
- 147.16 Da
- Parent residue
- ARG
Sources
GGB
SwissSidechain
Canavanine
A SwissSidechain non-natural amino acid assigned to the arginine-derivative reference family.
- Formula
- C5H12N4O3
- Formula weight
- 176.17 Da
- Parent residue
- ARG
Sources
HHK
SwissSidechain
(2S)-2,8-diaminooctanoic acid
A SwissSidechain non-natural amino acid assigned to the lysine-derivative reference family.
- Formula
- C8H19N2O2
- Formula weight
- 176.26 Da
- Parent residue
- LYS
Sources
HRG
SwissSidechain
Homoarginine
A SwissSidechain non-natural amino acid assigned to the arginine-derivative reference family.
- Formula
- C7H17N4O2
- Formula weight
- 190.24 Da
- Parent residue
- ARG
Sources
PYZ1
SwissSidechain
3-(1-Pyrazolyl)-alanine
A SwissSidechain non-natural amino acid assigned to the histidine-derivative reference family.
- Formula
- C6H9N3O2
- Formula weight
- 156.16 Da
- Parent residue
- HIS
TEZA
SwissSidechain
3-(2-Tetrazolyl)-alanine
A SwissSidechain non-natural amino acid assigned to the histidine-derivative reference family.
- Formula
- C4H7N5O2
- Formula weight
- 158.14 Da
- Parent residue
- HIS
Sources
THA3
SwissSidechain
3-(3-thienyl)-alanine
A SwissSidechain non-natural amino acid assigned to the histidine-derivative reference family.
- Formula
- C7H9NO2S
- Formula weight
- 172.22 Da
- Parent residue
- HIS
Sources
THIC
SwissSidechain
Thio-citrulline
A SwissSidechain non-natural amino acid assigned to the arginine-derivative reference family.
- Formula
- C6H13N3O2S
- Formula weight
- 192.26 Da
- Parent residue
- ARG
Sources
TIH
SwissSidechain
3-(2-thienyl)-alanine
A SwissSidechain non-natural amino acid assigned to the histidine-derivative reference family.
- Formula
- C7H9NO2S
- Formula weight
- 172.22 Da
- Parent residue
- HIS
Sources
TRZ4
SwissSidechain
3-(1,2,4-Triazol-1-yl)-alanine
A SwissSidechain non-natural amino acid assigned to the histidine-derivative reference family.
- Formula
- C5H8N4O2
- Formula weight
- 157.15 Da
- Parent residue
- HIS
Sources
TZA4
SwissSidechain
(4-thiazolyl)-alanine
A SwissSidechain non-natural amino acid assigned to the histidine-derivative reference family.
- Formula
- C6H8N2O2S
- Formula weight
- 173.21 Da
- Parent residue
- HIS
Sources
Polar and sulfur-containing analogs
20 entries
2FM
SwissSidechain
S-(difluoromethyl)-homocysteine
A SwissSidechain non-natural amino acid assigned to the methionine-derivative reference family.
- Formula
- C5H9F2NO2S
- Formula weight
- 186.20 Da
- Parent residue
- MET
Sources
4CY
SwissSidechain
Nitrilo-L-methionine
A SwissSidechain non-natural amino acid assigned to the methionine-derivative reference family.
- Formula
- C5H8N2O2S
- Formula weight
- 161.20 Da
- Parent residue
- MET
Sources
AA4
SwissSidechain
2-amino-5-hydroxypentanoic acid
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C5H11NO3
- Formula weight
- 134.15 Da
- Parent residue
- SER
Sources
ALO
SwissSidechain
Allo-threonine
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C4H9NO3
- Formula weight
- 119.12 Da
- Parent residue
- SER
Sources
CSE
SwissSidechain
Selenocysteine
A SwissSidechain non-natural amino acid assigned to the cysteine-derivative reference family.
- Formula
- C3H7NO2Se
- Formula weight
- 168.05 Da
- Parent residue
- CYS
Sources
CTH
SwissSidechain
4-chloro-threonine
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C4H8ClNO3
- Formula weight
- 154.57 Da
- Parent residue
- SER
Sources
DDZ
SwissSidechain
3,3-dihydroxy-alanine
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C3H7NO4
- Formula weight
- 122.10 Da
- Parent residue
- SER
Sources
HCS
SwissSidechain
Homocysteine
A SwissSidechain non-natural amino acid assigned to the cysteine-derivative reference family.
- Formula
- C4H9NO2S
- Formula weight
- 136.19 Da
- Parent residue
- CYS
Sources
HIL4
SwissSidechain
4-Hydroxy-L-isoleucine
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C6H13NO3
- Formula weight
- 148.18 Da
- Parent residue
- SER
HL2
SwissSidechain
(2s,3r)-2-amino-3-hydroxy-4-methylpentanoic acid
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C6H13NO3
- Formula weight
- 148.18 Da
- Parent residue
- SER
Sources
HLU
SwissSidechain
Beta-hydroxyleucine
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C6H13NO3
- Formula weight
- 147.17 Da
- Parent residue
- SER
Sources
HVA
SwissSidechain
3-hydroxy-L-valine
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C5H11NO3
- Formula weight
- 133.15 Da
- Parent residue
- SER
Sources
ILX
SwissSidechain
4,5-dihydroxy-isoleucine
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C6H13NO4
- Formula weight
- 163.17 Da
- Parent residue
- SER
Sources
LDO
SwissSidechain
6-hydroxy-L-norleucine
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C6H13NO3
- Formula weight
- 148.18 Da
- Parent residue
- SER
Sources
LE1
SwissSidechain
Penicillamine
A SwissSidechain non-natural amino acid assigned to the cysteine-derivative reference family.
- Formula
- C5H11NO2S
- Formula weight
- 150.22 Da
- Parent residue
- CYS
Sources
ME0
SwissSidechain
Hydroxy-L-methionine
A SwissSidechain non-natural amino acid assigned to the methionine-derivative reference family.
- Formula
- C5H11NO3S
- Formula weight
- 166.22 Da
- Parent residue
- MET
Sources
OCY
SwissSidechain
S-(2-hydroxyethyl)-L-cysteine
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C5H11NO3S
- Formula weight
- 165.21 Da
- Parent residue
- SER
Sources
TH6
SwissSidechain
4-hydroxy-L-threonine
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C4H9NO4
- Formula weight
- 135.12 Da
- Parent residue
- SER
Sources
TPO2
SwissSidechain
Phosphothreonine (charge: -2)
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C4H8NO6P
- Formula weight
- 200.11 Da
- Parent residue
- SER
Sources
VAH
SwissSidechain
Hydroxynorvaline
A SwissSidechain non-natural amino acid assigned to the serine-derivative reference family.
- Formula
- C5H11NO3
- Formula weight
- 133.15 Da
- Parent residue
- SER
Sources
Other noncanonical amino acids
12 entries
AS2
SwissSidechain
(2R)-2-amino-4-oxobutanoic acid
A SwissSidechain non-natural amino acid assigned to the other non-natural sidechain reference family.
- Formula
- C4H7NO3
- Formula weight
- 117.10 Da
- Parent residue
- Not assigned
Sources
AZDA
SwissSidechain
Azido-alanine
A SwissSidechain non-natural amino acid assigned to the other non-natural sidechain reference family.
- Formula
- C3H6N4O2
- Formula weight
- 131.11 Da
- Parent residue
- Not assigned
Sources
CAN
SwissSidechain
Canaline
A SwissSidechain non-natural amino acid assigned to the other non-natural sidechain reference family.
- Formula
- C4H10N2O3
- Formula weight
- 135.14 Da
- Parent residue
- Not assigned
Sources
CSA
SwissSidechain
S-acetonylcysteine
A SwissSidechain non-natural amino acid assigned to the other non-natural sidechain reference family.
- Formula
- C6H11NO3S
- Formula weight
- 178.23 Da
- Parent residue
- Not assigned
Sources
LED
SwissSidechain
(4R)-5-oxo-L-leucine
A SwissSidechain non-natural amino acid assigned to the other non-natural sidechain reference family.
- Formula
- C6H11NO3
- Formula weight
- 146.16 Da
- Parent residue
- Not assigned
Sources
LVN
SwissSidechain
4-oxo-L-valine
A SwissSidechain non-natural amino acid assigned to the other non-natural sidechain reference family.
- Formula
- C5H9NO3
- Formula weight
- 131.13 Da
- Parent residue
- Not assigned
Sources
M2S
SwissSidechain
3,3-dimethyl-methionine sulfoxide
A SwissSidechain non-natural amino acid assigned to the other non-natural sidechain reference family.
- Formula
- C7H15NO3S
- Formula weight
- 194.27 Da
- Parent residue
- Not assigned
Sources
OAS
SwissSidechain
O-acetylserine
A SwissSidechain non-natural amino acid assigned to the other non-natural sidechain reference family.
- Formula
- C5H9NO4
- Formula weight
- 148.14 Da
- Parent residue
- Not assigned
Sources
OLT
SwissSidechain
O-methyl-L-threonine
A SwissSidechain non-natural amino acid assigned to the other non-natural sidechain reference family.
- Formula
- C5H11NO3
- Formula weight
- 134.15 Da
- Parent residue
- Not assigned
ONL
SwissSidechain
5-oxo-L-norleucine
A SwissSidechain non-natural amino acid assigned to the other non-natural sidechain reference family.
- Formula
- C6H11NO3
- Formula weight
- 146.16 Da
- Parent residue
- Not assigned
Sources
THG2
SwissSidechain
2-thienylglycine
A SwissSidechain non-natural amino acid assigned to the other non-natural sidechain reference family.
- Formula
- C6H7NO2S
- Formula weight
- 158.20 Da
- Parent residue
- Not assigned
Sources
THG3
SwissSidechain
3-thienylglycine
A SwissSidechain non-natural amino acid assigned to the other non-natural sidechain reference family.
- Formula
- C6H7NO2S
- Formula weight
- 158.20 Da
- Parent residue
- Not assigned
Beta-amino acids
4 entries
beta-Leu
(3S)-Beta-leucine
(3S)-β-亮氨酸
A branched-chain beta-amino acid containing an isopropyl side chain.
- Formula
- C6H13NO2
- Formula weight
- 131.17 Da
- Parent residue
- Not provided by PubChem
Sources
beta-hPhe
(S)-3-Amino-4-phenylbutanoic acid
(S)-3-氨基-4-苯基丁酸
An aromatic beta-amino acid containing a benzyl substituent on the amino-bearing carbon.
- Formula
- C10H13NO2
- Formula weight
- 179.22 Da
- Parent residue
- Not provided by PubChem
Sources
beta-hAla
(S)-3-Aminobutyric acid
(S)-3-氨基丁酸
A chiral beta-amino acid with a methyl substituent on the amino-bearing beta carbon.
- Formula
- C4H9NO2
- Formula weight
- 103.12 Da
- Parent residue
- Not provided by PubChem
Sources
beta-Ala
Beta-alanine
β-丙氨酸
An achiral beta-amino acid with the amino group on the beta carbon, extending the peptide backbone.
- Formula
- C3H7NO2
- Formula weight
- 89.09 Da
- Parent residue
- Not provided by PubChem
Sources
N-methyl amino acids
17 entries
CCD 5JP
HighPlay2
N-methylserine
N-甲基丝氨酸
An N-methylated amino acid represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C4H9NO3
- Formula weight
- 119.119 Da
- Parent residue
- SER
Sources
CCD E9M
HighPlay2
N-methyltryptophan
N-甲基色氨酸
An N-methylated amino acid represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C12H14N2O2
- Formula weight
- 218.252 Da
- Parent residue
- TRP
Sources
CCD EME
HighPlay2
N-methylglutamic acid
N-甲基谷氨酸
An N-methylated amino acid represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C6H11NO4
- Formula weight
- 161.156 Da
- Parent residue
- GLU
Sources
CCD GNC
HighPlay2
N-methylglutamine
N-甲基谷氨酰胺
An N-methylated amino acid represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C6H12N2O3
- Formula weight
- 160.171 Da
- Parent residue
- GLN
Sources
CCD IML
HighPlay2
N-methylisoleucine
N-甲基异亮氨酸
An N-methylated amino acid represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C7H15NO2
- Formula weight
- 145.199 Da
- Parent residue
- ILE
Sources
CCD MAA
N-Me-L-Ala
HighPlay2
N-methylalanine
N-甲基丙氨酸
An N-methylated alanine that changes backbone hydrogen-bonding and conformational behavior.
- Formula
- C4H9NO2
- Formula weight
- 103.120 Da
- Parent residue
- ALA
Sources
CCD MEA
N-Me-L-Phe
HighPlay2
N-methylphenylalanine
N-甲基苯丙氨酸
An aromatic N-methyl amino acid used to alter backbone hydrogen bonding and conformation.
- Formula
- C10H13NO2
- Formula weight
- 179.216 Da
- Parent residue
- PHE
Sources
CCD MEN
HighPlay2
N-methylasparagine
N-甲基天冬酰胺
An N-methylated amino acid represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C5H10N2O3
- Formula weight
- 146.144 Da
- Parent residue
- ASN
Sources
CCD MLE
N-Me-L-Leu
HighPlay2
N-methylleucine
N-甲基亮氨酸
A hydrophobic N-methylated leucine derivative with altered backbone hydrogen-bonding capacity.
- Formula
- C7H15NO2
- Formula weight
- 145.199 Da
- Parent residue
- LEU
Sources
CCD MME
HighPlay2
N-methylmethionine
N-甲基蛋氨酸
An N-methylated amino acid represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C6H13NO2S
- Formula weight
- 163.238 Da
- Parent residue
- MET
Sources
CCD MVA
HighPlay2
N-methylvaline
N-甲基缬氨酸
An N-methylated amino acid represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C6H13NO2
- Formula weight
- 131.173 Da
- Parent residue
- VAL
Sources
CCD NCY
HighPlay2
N-methylcysteine
N-甲基半胱氨酸
An N-methylated amino acid represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C4H9NO2S
- Formula weight
- 135.185 Da
- Parent residue
- Not assigned
Sources
CCD NMK
HighPlay2
N-methyllysine
N-甲基赖氨酸
An N-methylated amino acid represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C7H17N2O2
- Formula weight
- 161.222 Da
- Parent residue
- Not assigned
Sources
CCD NZC
HighPlay2
N-methylthreonine
N-甲基苏氨酸
An N-methylated amino acid represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C5H11NO3
- Formula weight
- 133.146 Da
- Parent residue
- THR
Sources
CCD SAR
Sar
HighPlay2
N-methylglycine (sarcosine)
N-甲基甘氨酸（肌氨酸）
N-Methylglycine, the simplest achiral N-methyl amino acid building block.
- Formula
- C3H7NO2
- Formula weight
- 89.093 Da
- Parent residue
- GLY
Sources
CCD SOQ
HighPlay2
N-methylaspartic acid
N-甲基天冬氨酸
An N-methylated amino acid represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C5H9NO4
- Formula weight
- 147.129 Da
- Parent residue
- Not assigned
Sources
CCD YNM
HighPlay2
N-methyltyrosine
N-甲基酪氨酸
An N-methylated amino acid represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C10H13NO3
- Formula weight
- 195.215 Da
- Parent residue
- TYR
Sources
Halogenated amino acids
8 entries
CCD 2L5
HighPlay2
2-chloro-L-phenylalanine
2-氯-L-苯丙氨酸
A halogenated amino acid analog represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C9H10ClNO2
- Formula weight
- 199.634 Da
- Parent residue
- Not assigned
Sources
CCD FLA
HighPlay2
Trifluoroalanine
三氟丙氨酸
A halogenated amino acid analog represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C3H4F3NO2
- Formula weight
- 143.065 Da
- Parent residue
- ALA
Sources
CCD FTR
HighPlay2
5-fluoro-L-tryptophan
5-氟-L-色氨酸
A halogenated amino acid analog represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C11H11FN2O2
- Formula weight
- 222.216 Da
- Parent residue
- TRP
Sources
CCD N0A
HighPlay2
3-fluoro-L-phenylalanine
3-氟-L-苯丙氨酸
A halogenated amino acid analog represented explicitly in the HighPlay2 residue alphabet.
- Formula
- C9H10FNO2
- Formula weight
- 183.180 Da
- Parent residue
- PHE
Sources
CCD PFF
4-F-L-Phe
HighPlay2
4-fluoro-L-phenylalanine
4-氟-L-苯丙氨酸
A para-fluorinated phenylalanine analog with modified aromatic electronic properties.
- Formula
- C9H10FNO2
- Formula weight
- 183.180 Da
- Parent residue
- PHE
Sources
CCD PHI
4-I-L-Phe
HighPlay2
4-iodo-L-phenylalanine
4-碘-L-苯丙氨酸
A para-iodinated phenylalanine analog with an iodine-substituted aromatic ring.
- Formula
- C9H10INO2
- Formula weight
- 291.086 Da
- Parent residue
- PHE
Sources
4-Br-L-Phe
4-Bromo-L-phenylalanine
4-溴-L-苯丙氨酸
A para-brominated phenylalanine analog with a larger halogen substituent.
- Formula
- C9H10BrNO2
- Formula weight
- 244.08 Da
- Parent residue
- Not provided by PubChem
Sources
4-Cl-L-Phe
4-Chloro-L-phenylalanine
4-氯-L-苯丙氨酸
A para-chlorinated phenylalanine analog with a halogenated aromatic side chain.
- Formula
- C9H10ClNO2
- Formula weight
- 199.63 Da
- Parent residue
- Not provided by PubChem
Sources
Bioorthogonal amino acids
4 entries
CCD F9D
L-Pra
HighPlay2
Propargylglycine
炔丙基甘氨酸
A terminal-alkyne amino acid used as a handle for click-chemistry conjugation.
- Formula
- C5H7NO2
- Formula weight
- 113.115 Da
- Parent residue
- Not assigned
Sources
Aha
L-Azidohomoalanine
L-叠氮高丙氨酸
An azide-bearing methionine analog used as a bioorthogonal labeling handle.
- Formula
- C4H8N4O2
- Formula weight
- 144.13 Da
- Parent residue
- Not provided by PubChem
Sources
Hpg
L-Homopropargylglycine
L-高炔丙基甘氨酸
A methionine analog bearing a terminal alkyne for bioorthogonal labeling and conjugation.
- Formula
- C6H9NO2
- Formula weight
- 127.14 Da
- Parent residue
- Not provided by PubChem
Sources
pAzF
p-Azido-L-phenylalanine
4-叠氮-L-苯丙氨酸
A phenylalanine analog bearing a para-azide group as a bioorthogonal reaction handle.
- Formula
- C9H10N4O2
- Formula weight
- 206.20 Da
- Parent residue
- Not provided by PubChem
Sources
Modified residues
16 entries
CCD 060
HighPlay2
S-methyl-D-cysteine
S-甲基-D-半胱氨酸
CCD identity note
HighPlay2 labels the L isomer; CCD 060 is defined as D-peptide linking.
Study label: S-methyl-L-cysteine
- Formula
- C4H9NO2S
- Formula weight
- 135.185 Da
- Parent residue
- Not assigned
Sources
CCD 2MR
HighPlay2
N,N-dimethylarginine (SDMA)
对称二甲基精氨酸（SDMA）
A chemically modified residue represented by a defined PDB CCD component.
- Formula
- C8H18N4O2
- Formula weight
- 202.254 Da
- Parent residue
- ARG
Sources
CCD ALY
AcK
HighPlay2
N6-acetyl-L-lysine
N6-乙酰-L-赖氨酸
An L-lysine residue acetylated at the side-chain amino group, representing lysine acetylation.
- Formula
- C8H16N2O3
- Formula weight
- 188.224 Da
- Parent residue
- LYS
Sources
CCD CCJ
HighPlay2
S-carboxymethyl-D-cysteine
S-羧甲基-D-半胱氨酸
CCD identity note
HighPlay2 labels the L isomer; CCD CCJ is defined as D-peptide linking.
Study label: S-carboxymethyl-L-cysteine
- Formula
- C5H9NO4S
- Formula weight
- 179.194 Da
- Parent residue
- Not assigned
Sources
CCD DA2
HighPlay2
Asymmetric dimethylarginine (ADMA)
非对称二甲基精氨酸（ADMA）
A chemically modified residue represented by a defined PDB CCD component.
- Formula
- C8H18N4O2
- Formula weight
- 202.254 Da
- Parent residue
- ARG
Sources
CCD HIC
HighPlay2
1-methyl-L-histidine
1-甲基-L-组氨酸
A chemically modified residue represented by a defined PDB CCD component.
- Formula
- C7H11N3O2
- Formula weight
- 169.181 Da
- Parent residue
- HIS
Sources
CCD HYP
L-Hyp
HighPlay2
4-hydroxyproline
4-羟基脯氨酸
A 4-hydroxylated proline residue found prominently in collagen-derived sequences.
- Formula
- C5H9NO3
- Formula weight
- 131.130 Da
- Parent residue
- PRO
Sources
CCD MHO
HighPlay2
Methionine sulfoxide
蛋氨酸亚砜
A chemically modified residue represented by a defined PDB CCD component.
- Formula
- C5H11NO3S
- Formula weight
- 165.211 Da
- Parent residue
- MET
Sources
CCD MHS
HighPlay2
3-methyl-L-histidine
3-甲基-L-组氨酸
A chemically modified residue represented by a defined PDB CCD component.
- Formula
- C7H11N3O2
- Formula weight
- 169.181 Da
- Parent residue
- HIS
Sources
CCD OCS
HighPlay2
3-sulfo-L-alanine (cysteic acid)
3-磺基-L-丙氨酸（半胱氨酸磺酸）
A chemically modified residue represented by a defined PDB CCD component.
- Formula
- C3H7NO5S
- Formula weight
- 169.156 Da
- Parent residue
- CYS
Sources
CCD OMT
HighPlay2
Methionine sulfone
蛋氨酸砜
A chemically modified residue represented by a defined PDB CCD component.
- Formula
- C5H11NO4S
- Formula weight
- 181.210 Da
- Parent residue
- MET
Sources
CCD PRK
HighPlay2
N6-propionyl-L-lysine
N6-丙酰-L-赖氨酸
A chemically modified residue represented by a defined PDB CCD component.
- Formula
- C9H18N2O3
- Formula weight
- 202.251 Da
- Parent residue
- LYS
Sources
CCD SEP
pSer
HighPlay2
Phosphoserine
磷酸丝氨酸
The phosphorylated form of L-serine and a common post-translationally modified residue.
- Formula
- C3H8NO6P
- Formula weight
- 185.072 Da
- Parent residue
- SER
Sources
CCD SLZ
HighPlay2
S-(2-aminoethyl)-L-cysteine
S-(2-氨基乙基)-L-半胱氨酸
A chemically modified residue represented by a defined PDB CCD component.
- Formula
- C5H12N2O2S
- Formula weight
- 164.226 Da
- Parent residue
- LYS
Sources
CCD TPO
HighPlay2
Phosphothreonine
磷酸苏氨酸
A chemically modified residue represented by a defined PDB CCD component.
- Formula
- C4H10NO6P
- Formula weight
- 199.099 Da
- Parent residue
- THR
Sources
sTyr
O-Sulfo-L-tyrosine
O-磺基-L-酪氨酸
An L-tyrosine residue sulfated at the phenolic oxygen, representing tyrosine sulfation.
- Formula
- C9H11NO6S
- Formula weight
- 261.25 Da
- Parent residue
- Not provided by PubChem
Sources