Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5978
Number of amino acids:63
Molecular Weight:6671.96 Da
Theoretical pI:5.21


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)812.7%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)11.59%
Aspartic Acid ASP (D)23.17%
Glycine GLY (G)23.17%
Phynylalanine PHE (F)34.76%
Isoleucine ILE (I)812.7%
Histidine HIS (H)23.17%
Lysine LYS (K)11.59%
Methionine MET (M)34.76%
Leucine LEU (L)812.7%
Asparagine ASN (N)00%
Glutamine GLN (Q)23.17%
Proline PRO (P)57.94%
Serine SER (S)812.7%
Arginine ARG (R)00%
Threonine THR (T)34.76%
Tryptophan TRP (W)00%
Valine VAL (V)57.94%
Tyrosine TYR (Y)23.17%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC311
HydrogenH496
NitrogenN70
OxygenO85
SulphurS3

FormulaC311H496N70O85S3
Total Number of Atoms:965


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    2980
Absorption 0.1% (=1 g/l)    0.447
Aromaticity:0.079

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 56.84

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[41.27, 23.81, 31.75]

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:134.762
Grand average of hydropathicity (GRAVY):1.08