Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5786
Number of amino acids:306
Molecular Weight:34225.49 Da
Theoretical pI:9.81


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)72.29%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)82.61%
Aspartic Acid ASP (D)00%
Glycine GLY (G)20.65%
Phynylalanine PHE (F)20.65%
Isoleucine ILE (I)20.65%
Histidine HIS (H)268.5%
Lysine LYS (K)3310.78%
Methionine MET (M)51.63%
Leucine LEU (L)61.96%
Asparagine ASN (N)10.33%
Glutamine GLN (Q)00%
Proline PRO (P)11637.91%
Serine SER (S)3611.76%
Arginine ARG (R)20.65%
Threonine THR (T)123.92%
Tryptophan TRP (W)00%
Valine VAL (V)154.9%
Tyrosine TYR (Y)3310.78%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1634
HydrogenH2366
NitrogenN398
OxygenO405
SulphurS5

FormulaC1634H2366N398O405S5
Total Number of Atoms:4808


Total number of positively charged residues (ARG + LYS):35
Total number of negatively charged residues (ASP + GLU):8
Extinction Coefficient:This protein does not contain any Tryptophan residues. Experience shows that this could result in more than 10% error in the computed extinction coefficient.

Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    49170
Absorption 0.1% (=1 g/l)    1.437
Aromaticity:0.114

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 129.11

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[18.95, 50.65, 8.50]

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:26.6993
Grand average of hydropathicity (GRAVY):-1.29