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Peptide record

TPDB92979

KL4 Cell-penetrating Peptides standard
21 amino acids
Basic Information
3D PDB MODEL
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TPDB92979
KL4
Cell-penetrating Peptides
Delivery and barrier-penetrating peptides
CPPsite3.0
standard
No
A 21-aa standard natural cell-penetrating peptides peptide sequence curated from CPPsite3.0, with an available 3D structural model.
C-terminal: Amidation Chemical: PEG (of 12-mers) modified Nanoparticle
Sequence
KLLLLKLLLLKLLLLKLLLLK-NH2
Physicochemical Analysis
C126H238N26O22
ARNDCEQGHIMFPSTWYV
L
2469.44
11.12
5
0
16
+5
-4.01
1.967
297.14
Mammalian: 1.3 hour Yeast: 3 min E.coli: 2 min
0
0.00
0
Residue Composition
number
0
A
0
R
0
N
0
D
0
C
0
E
0
Q
0
G
0
H
0
I
16
L
5
K
0
M
0
F
0
P
0
S
0
T
0
W
0
Y
0
V
Amino Acid Distribution
A: 0 R: 0 N: 0 D: 0 C: 0 E: 0 Q: 0 G: 0 H: 0 I: 0 L: 16 K: 5 M: 0 F: 0 P: 0 S: 0 T: 0 W: 0 Y: 0 V: 0
Chemical Descriptors
21
C126H238N26O22
2469.44
11.12
+5
-4.01
1.967
Amidation
PEG (of 12-mers) modified Nanoparticle
L
Cationic
Linear
Free
N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](Cc1ccccc1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCN=C)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CCCN=C)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCN=C)C(=O)N[C@@H](Cc1ccccc1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCN=C)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)/C/1=N/[C@@H](CCCN=C)C(=O)N2CCC[C@H]2C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCN=C)C(=O)OO1
Evidence Records 1 records
Evidence 1 Activity

Activity

Cell-penetrating Peptides

Target

A549 , Beas-2B And THP-1 Cells

Assay & Model

Female BALB/c mice ( 8 to 9 weeks and 18 to 22 g)
Female BALB/c mice ( 8 to 9 weeks and 18 to 22 g)

Source & Reference

CPPsite3.0
CPPsite3

Other

Source Activity Label Source Definition
Cell-penetrating Peptides
CPPsite3.0 experimentally validated cell-penetrating peptide annotation.
Natural residues Linear L Cationic
Synthetic
Cyanine-5 labelled EGFP mRNA
The percentage of cell uptake (60%) and the median fluorescence intensity of the PEG12KL4/mRNA were significantly higher than that of naked mRNA and KL4/mRNA (15% uptake) complexes, while naked mRNA could not enter the cells.
Endocytosis
In vitro and in vivo
CTTHHHHHHHHHHHHHHHHTTTCC
Additional Detail Fields 1 fields
CTTHHHHHHHHHHHHHHHHTTTCC