Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4895
Number of amino acids:567
Molecular Weight:61564.69 Da
Theoretical pI:6.09


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)6210.93%
Cysteine CYS (C)101.76%
Glutamic Acid GLU (E)183.17%
Aspartic Acid ASP (D)264.59%
Glycine GLY (G)457.94%
Phynylalanine PHE (F)264.59%
Isoleucine ILE (I)193.35%
Histidine HIS (H)173%
Lysine LYS (K)101.76%
Methionine MET (M)101.76%
Leucine LEU (L)539.35%
Asparagine ASN (N)295.11%
Glutamine GLN (Q)213.7%
Proline PRO (P)386.7%
Serine SER (S)346%
Arginine ARG (R)264.59%
Threonine THR (T)488.47%
Tryptophan TRP (W)122.12%
Valine VAL (V)437.58%
Tyrosine TYR (Y)203.53%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2766
HydrogenH4221
NitrogenN751
OxygenO808
SulphurS20

FormulaC2766H4221N751O808S20
Total Number of Atoms:8566


Total number of positively charged residues (ARG + LYS):36
Total number of negatively charged residues (ASP + GLU):44
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    96425
Absorption 0.1% (=1 g/l)    1.566,   assuming all pairs of CYS residues form cystines

Ext. coefficient    95800
Absorption 0.1% (=1 g/l)    1.556,   assuming all CYS residues are reduced
Aromaticity:0.102

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 35.60

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[30.51, 25.75, 25.22]

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:82.4514
Grand average of hydropathicity (GRAVY):-0.04