Physicochemical Properties of Peptide



PPepDB ID:PPepDB_6067
Number of amino acids:74
Molecular Weight:7698.91 Da
Theoretical pI:4.41


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)1216.22%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)34.05%
Glycine GLY (G)34.05%
Phynylalanine PHE (F)68.11%
Isoleucine ILE (I)56.76%
Histidine HIS (H)11.35%
Lysine LYS (K)00%
Methionine MET (M)22.7%
Leucine LEU (L)810.81%
Asparagine ASN (N)11.35%
Glutamine GLN (Q)22.7%
Proline PRO (P)56.76%
Serine SER (S)1114.86%
Arginine ARG (R)11.35%
Threonine THR (T)45.41%
Tryptophan TRP (W)00%
Valine VAL (V)79.46%
Tyrosine TYR (Y)34.05%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC358
HydrogenH550
NitrogenN82
OxygenO102
SulphurS2

FormulaC358H550N82O102S2
Total Number of Atoms:1094


Total number of positively charged residues (ARG + LYS):1
Total number of negatively charged residues (ASP + GLU):3
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    4470
Absorption 0.1% (=1 g/l)    0.581
Aromaticity:0.122

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 52.80

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[39.19, 27.03, 29.73]

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:112.162
Grand average of hydropathicity (GRAVY):0.96