Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5915
Number of amino acids:371
Molecular Weight:42078.78 Da
Theoretical pI:9.7


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)41.08%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)318.36%
Aspartic Acid ASP (D)10.27%
Glycine GLY (G)20.54%
Phynylalanine PHE (F)20.54%
Isoleucine ILE (I)30.81%
Histidine HIS (H)20.54%
Lysine LYS (K)6718.06%
Methionine MET (M)10.27%
Leucine LEU (L)71.89%
Asparagine ASN (N)20.54%
Glutamine GLN (Q)10.27%
Proline PRO (P)14037.74%
Serine SER (S)20.54%
Arginine ARG (R)10.27%
Threonine THR (T)00%
Tryptophan TRP (W)00%
Valine VAL (V)6718.06%
Tyrosine TYR (Y)3810.24%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2074
HydrogenH3172
NitrogenN448
OxygenO479
SulphurS1

FormulaC2074H3172N448O479S1
Total Number of Atoms:6174


Total number of positively charged residues (ARG + LYS):68
Total number of negatively charged residues (ASP + GLU):32
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    56620
Absorption 0.1% (=1 g/l)    1.346
Aromaticity:0.108

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 61.48

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[31.54, 39.35, 11.59]

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:63.9623
Grand average of hydropathicity (GRAVY):-0.90