Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4989
Number of amino acids:448
Molecular Weight:50622.24 Da
Theoretical pI:5.96


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)357.81%
Cysteine CYS (C)51.12%
Glutamic Acid GLU (E)214.69%
Aspartic Acid ASP (D)255.58%
Glycine GLY (G)296.47%
Phynylalanine PHE (F)286.25%
Isoleucine ILE (I)153.35%
Histidine HIS (H)81.79%
Lysine LYS (K)204.46%
Methionine MET (M)153.35%
Leucine LEU (L)378.26%
Asparagine ASN (N)286.25%
Glutamine GLN (Q)214.69%
Proline PRO (P)163.57%
Serine SER (S)368.04%
Arginine ARG (R)214.69%
Threonine THR (T)276.03%
Tryptophan TRP (W)132.9%
Valine VAL (V)337.37%
Tyrosine TYR (Y)153.35%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2272
HydrogenH3447
NitrogenN609
OxygenO668
SulphurS20

FormulaC2272H3447N609O668S20
Total Number of Atoms:7016


Total number of positively charged residues (ARG + LYS):41
Total number of negatively charged residues (ASP + GLU):46
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    94100
Absorption 0.1% (=1 g/l)    1.859,   assuming all pairs of CYS residues form cystines

Ext. coefficient    93850
Absorption 0.1% (=1 g/l)    1.854,   assuming all CYS residues are reduced
Aromaticity:0.125

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 32.39

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[31.47, 24.33, 24.11]

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:74.4419
Grand average of hydropathicity (GRAVY):-0.26