Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5036
Number of amino acids:286
Molecular Weight:31532.07 Da
Theoretical pI:9.14


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)258.74%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)113.85%
Aspartic Acid ASP (D)134.55%
Glycine GLY (G)206.99%
Phynylalanine PHE (F)134.55%
Isoleucine ILE (I)227.69%
Histidine HIS (H)31.05%
Lysine LYS (K)113.85%
Methionine MET (M)41.4%
Leucine LEU (L)3211.19%
Asparagine ASN (N)165.59%
Glutamine GLN (Q)113.85%
Proline PRO (P)113.85%
Serine SER (S)258.74%
Arginine ARG (R)175.94%
Threonine THR (T)186.29%
Tryptophan TRP (W)10.35%
Valine VAL (V)196.64%
Tyrosine TYR (Y)144.9%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1422
HydrogenH2252
NitrogenN382
OxygenO419
SulphurS4

FormulaC1422H2252N382O419S4
Total Number of Atoms:4479


Total number of positively charged residues (ARG + LYS):28
Total number of negatively charged residues (ASP + GLU):24
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    26360
Absorption 0.1% (=1 g/l)    0.836
Aromaticity:0.098

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 28.50

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[35.31, 25.17, 25.17]

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:101.643
Grand average of hydropathicity (GRAVY):0.02