Physicochemical Properties of Peptide



PPepDB ID:PPepDB_289
Number of amino acids:17
Molecular Weight:2011.27 Da
Theoretical pI:6.74


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)211.76%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)15.88%
Glycine GLY (G)00%
Phynylalanine PHE (F)15.88%
Isoleucine ILE (I)00%
Histidine HIS (H)15.88%
Lysine LYS (K)00%
Methionine MET (M)00%
Leucine LEU (L)15.88%
Asparagine ASN (N)15.88%
Glutamine GLN (Q)15.88%
Proline PRO (P)317.65%
Serine SER (S)00%
Arginine ARG (R)15.88%
Threonine THR (T)15.88%
Tryptophan TRP (W)15.88%
Valine VAL (V)211.76%
Tyrosine TYR (Y)15.88%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC95
HydrogenH135
NitrogenN25
OxygenO24
SulphurS0

FormulaC95H135N25O24S0
Total Number of Atoms:279


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    6990
Absorption 0.1% (=1 g/l)    3.475
Aromaticity:0.176

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 40.12

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[35.29, 23.53, 17.65]

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:68.8235
Grand average of hydropathicity (GRAVY):-0.43