Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5272
Number of amino acids:387
Molecular Weight:42573.37 Da
Theoretical pI:5.37


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)379.56%
Cysteine CYS (C)10.26%
Glutamic Acid GLU (E)246.2%
Aspartic Acid ASP (D)184.65%
Glycine GLY (G)246.2%
Phynylalanine PHE (F)194.91%
Isoleucine ILE (I)205.17%
Histidine HIS (H)71.81%
Lysine LYS (K)235.94%
Methionine MET (M)133.36%
Leucine LEU (L)3910.08%
Asparagine ASN (N)194.91%
Glutamine GLN (Q)143.62%
Proline PRO (P)164.13%
Serine SER (S)307.75%
Arginine ARG (R)102.58%
Threonine THR (T)369.3%
Tryptophan TRP (W)20.52%
Valine VAL (V)194.91%
Tyrosine TYR (Y)164.13%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1905
HydrogenH2979
NitrogenN489
OxygenO587
SulphurS14

FormulaC1905H2979N489O587S14
Total Number of Atoms:5974


Total number of positively charged residues (ARG + LYS):33
Total number of negatively charged residues (ASP + GLU):42
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    34840
Absorption 0.1% (=1 g/l)    0.818,   assuming all pairs of CYS residues form cystines

Ext. coefficient    34840
Absorption 0.1% (=1 g/l)    0.818,   assuming all CYS residues are reduced
Aromaticity:0.096

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 38.49

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[29.72, 23.00, 29.20]

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:83.2557
Grand average of hydropathicity (GRAVY):-0.16