Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2735
Number of amino acids:47
Molecular Weight:5281.02 Da
Theoretical pI:6.07


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)510.64%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)36.38%
Aspartic Acid ASP (D)48.51%
Glycine GLY (G)12.13%
Phynylalanine PHE (F)12.13%
Isoleucine ILE (I)24.26%
Histidine HIS (H)24.26%
Lysine LYS (K)36.38%
Methionine MET (M)00%
Leucine LEU (L)36.38%
Asparagine ASN (N)12.13%
Glutamine GLN (Q)24.26%
Proline PRO (P)48.51%
Serine SER (S)36.38%
Arginine ARG (R)36.38%
Threonine THR (T)00%
Tryptophan TRP (W)12.13%
Valine VAL (V)817.02%
Tyrosine TYR (Y)12.13%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC238
HydrogenH377
NitrogenN67
OxygenO69
SulphurS0

FormulaC238H377N67O69S0
Total Number of Atoms:751


Total number of positively charged residues (ARG + LYS):6
Total number of negatively charged residues (ASP + GLU):7
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    6990
Absorption 0.1% (=1 g/l)    1.324
Aromaticity:0.064

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 39.91

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[34.04, 19.15, 23.40]

Amino acids in helix: V, I, Y, F, W, L || Amino acids in turn: N, P, G, S || Amino acids in sheet: E, M, A, L
Aliphatic index:101.489
Grand average of hydropathicity (GRAVY):-0.26