Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2637
Number of amino acids:29
Molecular Weight:3169.83 Da
Theoretical pI:5.59


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)310.34%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)13.45%
Glycine GLY (G)26.9%
Phynylalanine PHE (F)26.9%
Isoleucine ILE (I)13.45%
Histidine HIS (H)00%
Lysine LYS (K)00%
Methionine MET (M)26.9%
Leucine LEU (L)517.24%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)00%
Serine SER (S)413.79%
Arginine ARG (R)13.45%
Threonine THR (T)13.45%
Tryptophan TRP (W)26.9%
Valine VAL (V)517.24%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC150
HydrogenH234
NitrogenN34
OxygenO37
SulphurS2

FormulaC150H234N34O37S2
Total Number of Atoms:457


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

Ext. coefficient    11000
Absorption 0.1% (=1 g/l)    3.470
Aromaticity:0.138

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 17.38

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[51.72, 20.69, 34.48]

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:141.035
Grand average of hydropathicity (GRAVY):1.54