Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2872
Number of amino acids:7
Molecular Weight:784.95 Da
Theoretical pI:5.52


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)114.29%
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)00%
Histidine HIS (H)00%
Lysine LYS (K)00%
Methionine MET (M)00%
Leucine LEU (L)228.57%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)114.29%
Serine SER (S)114.29%
Arginine ARG (R)00%
Threonine THR (T)00%
Tryptophan TRP (W)114.29%
Valine VAL (V)114.29%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC39
HydrogenH60
NitrogenN8
OxygenO9
SulphurS0

FormulaC39H60N8O9S0
Total Number of Atoms:116


Total number of positively charged residues (ARG + LYS):0
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    5500
Absorption 0.1% (=1 g/l)    7.007
Aromaticity:0.143

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 49.87

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[57.14, 28.57, 42.86]

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:167.143
Grand average of hydropathicity (GRAVY):1.47