Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3080
Number of amino acids:21
Molecular Weight:2367.84 Da
Theoretical pI:11.17


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)314.29%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)00%
Glycine GLY (G)14.76%
Phynylalanine PHE (F)29.52%
Isoleucine ILE (I)00%
Histidine HIS (H)00%
Lysine LYS (K)29.52%
Methionine MET (M)14.76%
Leucine LEU (L)419.05%
Asparagine ASN (N)14.76%
Glutamine GLN (Q)14.76%
Proline PRO (P)00%
Serine SER (S)314.29%
Arginine ARG (R)14.76%
Threonine THR (T)00%
Tryptophan TRP (W)14.76%
Valine VAL (V)14.76%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC110
HydrogenH175
NitrogenN29
OxygenO27
SulphurS1

FormulaC110H175N29O27S1
Total Number of Atoms:342


Total number of positively charged residues (ARG + LYS):3
Total number of negatively charged residues (ASP + GLU):0
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    5500
Absorption 0.1% (=1 g/l)    2.323
Aromaticity:0.143

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 12.89

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[38.10, 23.81, 38.10]

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:102.381
Grand average of hydropathicity (GRAVY):0.44