Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5892
Number of amino acids:373
Molecular Weight:41555.23 Da
Theoretical pI:9.74


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)41.07%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)10.27%
Aspartic Acid ASP (D)00%
Glycine GLY (G)00%
Phynylalanine PHE (F)41.07%
Isoleucine ILE (I)00%
Histidine HIS (H)266.97%
Lysine LYS (K)318.31%
Methionine MET (M)10.27%
Leucine LEU (L)41.07%
Asparagine ASN (N)10.27%
Glutamine GLN (Q)20.54%
Proline PRO (P)15140.48%
Serine SER (S)4712.6%
Arginine ARG (R)00%
Threonine THR (T)30.8%
Tryptophan TRP (W)00%
Valine VAL (V)4712.6%
Tyrosine TYR (Y)5113.67%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2040
HydrogenH2889
NitrogenN459
OxygenO480
SulphurS1

FormulaC2040H2889N459O480S1
Total Number of Atoms:5869


Total number of positively charged residues (ARG + LYS):31
Total number of negatively charged residues (ASP + GLU):1
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    75990
Absorption 0.1% (=1 g/l)    1.829
Aromaticity:0.147

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 158.26

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[28.42, 53.35, 2.68]

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:41.7962
Grand average of hydropathicity (GRAVY):-0.89