Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4189
Number of amino acids:360
Molecular Weight:39199.35 Da
Theoretical pI:7.11


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)3910.83%
Cysteine CYS (C)92.5%
Glutamic Acid GLU (E)205.56%
Aspartic Acid ASP (D)174.72%
Glycine GLY (G)349.44%
Phynylalanine PHE (F)185%
Isoleucine ILE (I)113.06%
Histidine HIS (H)51.39%
Lysine LYS (K)154.17%
Methionine MET (M)71.94%
Leucine LEU (L)256.94%
Asparagine ASN (N)185%
Glutamine GLN (Q)82.22%
Proline PRO (P)123.33%
Serine SER (S)256.94%
Arginine ARG (R)226.11%
Threonine THR (T)215.83%
Tryptophan TRP (W)61.67%
Valine VAL (V)349.44%
Tyrosine TYR (Y)143.89%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1738
HydrogenH2689
NitrogenN483
OxygenO521
SulphurS16

FormulaC1738H2689N483O521S16
Total Number of Atoms:5447


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

Ext. coefficient    54360
Absorption 0.1% (=1 g/l)    1.387,   assuming all pairs of CYS residues form cystines

Ext. coefficient    53860
Absorption 0.1% (=1 g/l)    1.374,   assuming all CYS residues are reduced
Aromaticity:0.106

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 25.04

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[30.00, 24.72, 25.28]

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:77.2222
Grand average of hydropathicity (GRAVY):-0.12