Physicochemical Properties of Peptide



PPepDB ID:PPepDB_6147
Number of amino acids:164
Molecular Weight:18211.44 Da
Theoretical pI:6.83


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)63.66%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)84.88%
Aspartic Acid ASP (D)74.27%
Glycine GLY (G)74.27%
Phynylalanine PHE (F)74.27%
Isoleucine ILE (I)63.66%
Histidine HIS (H)31.83%
Lysine LYS (K)84.88%
Methionine MET (M)21.22%
Leucine LEU (L)1911.59%
Asparagine ASN (N)106.1%
Glutamine GLN (Q)42.44%
Proline PRO (P)169.76%
Serine SER (S)2716.46%
Arginine ARG (R)74.27%
Threonine THR (T)106.1%
Tryptophan TRP (W)21.22%
Valine VAL (V)84.88%
Tyrosine TYR (Y)74.27%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC817
HydrogenH1265
NitrogenN215
OxygenO253
SulphurS2

FormulaC817H1265N215O253S2
Total Number of Atoms:2552


Total number of positively charged residues (ARG + LYS):15
Total number of negatively charged residues (ASP + GLU):15
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    21430
Absorption 0.1% (=1 g/l)    1.177
Aromaticity:0.098

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 51.29

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[29.88, 36.59, 21.34]

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:77.2563
Grand average of hydropathicity (GRAVY):-0.46