Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4143
Number of amino acids:373
Molecular Weight:37821.44 Da
Theoretical pI:9.45


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)10026.81%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)195.09%
Aspartic Acid ASP (D)123.22%
Glycine GLY (G)215.63%
Phynylalanine PHE (F)195.09%
Isoleucine ILE (I)102.68%
Histidine HIS (H)10.27%
Lysine LYS (K)4211.26%
Methionine MET (M)30.8%
Leucine LEU (L)205.36%
Asparagine ASN (N)71.88%
Glutamine GLN (Q)82.14%
Proline PRO (P)215.63%
Serine SER (S)195.09%
Arginine ARG (R)20.54%
Threonine THR (T)287.51%
Tryptophan TRP (W)00%
Valine VAL (V)287.51%
Tyrosine TYR (Y)133.49%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1720
HydrogenH2734
NitrogenN438
OxygenO511
SulphurS3

FormulaC1720H2734N438O511S3
Total Number of Atoms:5406


Total number of positively charged residues (ARG + LYS):44
Total number of negatively charged residues (ASP + GLU):31
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    19370
Absorption 0.1% (=1 g/l)    0.512
Aromaticity:0.086

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 28.22

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[24.13, 18.23, 38.07]

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:79.9464
Grand average of hydropathicity (GRAVY):0.12