Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3081
Number of amino acids:22
Molecular Weight:2507.03 Da
Theoretical pI:10.29


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)313.64%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)00%
Glycine GLY (G)14.55%
Phynylalanine PHE (F)14.55%
Isoleucine ILE (I)00%
Histidine HIS (H)00%
Lysine LYS (K)29.09%
Methionine MET (M)14.55%
Leucine LEU (L)522.73%
Asparagine ASN (N)14.55%
Glutamine GLN (Q)14.55%
Proline PRO (P)14.55%
Serine SER (S)29.09%
Arginine ARG (R)14.55%
Threonine THR (T)00%
Tryptophan TRP (W)14.55%
Valine VAL (V)14.55%
Tyrosine TYR (Y)14.55%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC118
HydrogenH188
NitrogenN30
OxygenO28
SulphurS1

FormulaC118H188N30O28S1
Total Number of Atoms:365


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    6990
Absorption 0.1% (=1 g/l)    2.788
Aromaticity:0.136

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 28.42

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[40.91, 22.73, 40.91]

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:115.455
Grand average of hydropathicity (GRAVY):0.37