Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3324
Number of amino acids:13
Molecular Weight:1907.3 Da
Theoretical pI:12.01


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)00%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)00%
Glycine GLY (G)00%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)17.69%
Histidine HIS (H)00%
Lysine LYS (K)17.69%
Methionine MET (M)00%
Leucine LEU (L)17.69%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)323.08%
Serine SER (S)00%
Arginine ARG (R)215.38%
Threonine THR (T)00%
Tryptophan TRP (W)538.46%
Valine VAL (V)00%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC100
HydrogenH131
NitrogenN25
OxygenO14
SulphurS0

FormulaC100H131N25O14S0
Total Number of Atoms:270


Total number of positively charged residues (ARG + LYS):3
Total number of negatively charged residues (ASP + GLU):0
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    27500
Absorption 0.1% (=1 g/l)    14.418
Aromaticity:0.385

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 76.28

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[53.85, 23.08, 7.69]

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:60
Grand average of hydropathicity (GRAVY):-1.07