Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4588
Number of amino acids:290
Molecular Weight:31788.51 Da
Theoretical pI:8.88


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)289.66%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)144.83%
Aspartic Acid ASP (D)93.1%
Glycine GLY (G)175.86%
Phynylalanine PHE (F)113.79%
Isoleucine ILE (I)258.62%
Histidine HIS (H)20.69%
Lysine LYS (K)144.83%
Methionine MET (M)31.03%
Leucine LEU (L)3512.07%
Asparagine ASN (N)186.21%
Glutamine GLN (Q)82.76%
Proline PRO (P)82.76%
Serine SER (S)289.66%
Arginine ARG (R)124.14%
Threonine THR (T)227.59%
Tryptophan TRP (W)20.69%
Valine VAL (V)196.55%
Tyrosine TYR (Y)155.17%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1442
HydrogenH2296
NitrogenN372
OxygenO428
SulphurS3

FormulaC1442H2296N372O428S3
Total Number of Atoms:4541


Total number of positively charged residues (ARG + LYS):26
Total number of negatively charged residues (ASP + GLU):23
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    33350
Absorption 0.1% (=1 g/l)    1.049
Aromaticity:0.097

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 30.07

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[36.90, 24.48, 27.59]

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:109.345
Grand average of hydropathicity (GRAVY):0.16