Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5945
Number of amino acids:441
Molecular Weight:50352.24 Da
Theoretical pI:6.13


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)143.17%
Cysteine CYS (C)132.95%
Glutamic Acid GLU (E)276.12%
Aspartic Acid ASP (D)184.08%
Glycine GLY (G)327.26%
Phynylalanine PHE (F)214.76%
Isoleucine ILE (I)235.22%
Histidine HIS (H)132.95%
Lysine LYS (K)224.99%
Methionine MET (M)102.27%
Leucine LEU (L)429.52%
Asparagine ASN (N)245.44%
Glutamine GLN (Q)163.63%
Proline PRO (P)235.22%
Serine SER (S)357.94%
Arginine ARG (R)173.85%
Threonine THR (T)306.8%
Tryptophan TRP (W)92.04%
Valine VAL (V)265.9%
Tyrosine TYR (Y)265.9%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2272
HydrogenH3441
NitrogenN589
OxygenO663
SulphurS23

FormulaC2272H3441N589O663S23
Total Number of Atoms:6988


Total number of positively charged residues (ARG + LYS):39
Total number of negatively charged residues (ASP + GLU):45
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    88990
Absorption 0.1% (=1 g/l)    1.767,   assuming all pairs of CYS residues form cystines

Ext. coefficient    88240
Absorption 0.1% (=1 g/l)    1.752,   assuming all CYS residues are reduced
Aromaticity:0.127

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 36.77

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[33.33, 25.85, 21.09]

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:77.7551
Grand average of hydropathicity (GRAVY):-0.30