Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5070
Number of amino acids:329
Molecular Weight:36076.16 Da
Theoretical pI:8.9


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)257.6%
Cysteine CYS (C)92.74%
Glutamic Acid GLU (E)72.13%
Aspartic Acid ASP (D)236.99%
Glycine GLY (G)216.38%
Phynylalanine PHE (F)154.56%
Isoleucine ILE (I)123.65%
Histidine HIS (H)51.52%
Lysine LYS (K)216.38%
Methionine MET (M)61.82%
Leucine LEU (L)3510.64%
Asparagine ASN (N)309.12%
Glutamine GLN (Q)123.65%
Proline PRO (P)123.65%
Serine SER (S)195.78%
Arginine ARG (R)164.86%
Threonine THR (T)267.9%
Tryptophan TRP (W)10.3%
Valine VAL (V)278.21%
Tyrosine TYR (Y)72.13%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1580
HydrogenH2537
NitrogenN451
OxygenO484
SulphurS15

FormulaC1580H2537N451O484S15
Total Number of Atoms:5067


Total number of positively charged residues (ARG + LYS):37
Total number of negatively charged residues (ASP + GLU):30
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    16430
Absorption 0.1% (=1 g/l)    0.455,   assuming all pairs of CYS residues form cystines

Ext. coefficient    15930
Absorption 0.1% (=1 g/l)    0.442,   assuming all CYS residues are reduced
Aromaticity:0.070

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 34.88

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[29.48, 24.92, 22.19]

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:87.1125
Grand average of hydropathicity (GRAVY):-0.22