Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5590
Number of amino acids:318
Molecular Weight:35083.52 Da
Theoretical pI:6.83


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)185.66%
Cysteine CYS (C)30.94%
Glutamic Acid GLU (E)175.35%
Aspartic Acid ASP (D)144.4%
Glycine GLY (G)257.86%
Phynylalanine PHE (F)206.29%
Isoleucine ILE (I)278.49%
Histidine HIS (H)10.31%
Lysine LYS (K)247.55%
Methionine MET (M)20.63%
Leucine LEU (L)288.81%
Asparagine ASN (N)237.23%
Glutamine GLN (Q)165.03%
Proline PRO (P)257.86%
Serine SER (S)134.09%
Arginine ARG (R)72.2%
Threonine THR (T)154.72%
Tryptophan TRP (W)10.31%
Valine VAL (V)288.81%
Tyrosine TYR (Y)113.46%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1612
HydrogenH2525
NitrogenN405
OxygenO459
SulphurS5

FormulaC1612H2525N405O459S5
Total Number of Atoms:5006


Total number of positively charged residues (ARG + LYS):31
Total number of negatively charged residues (ASP + GLU):31
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    22015
Absorption 0.1% (=1 g/l)    0.628,   assuming all pairs of CYS residues form cystines

Ext. coefficient    21890
Absorption 0.1% (=1 g/l)    0.624,   assuming all CYS residues are reduced
Aromaticity:0.101

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 27.34

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[36.16, 27.04, 20.44]

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:98.6478
Grand average of hydropathicity (GRAVY):-0.04