Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3495
Number of amino acids:14
Molecular Weight:1809.16 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)17.14%
Phynylalanine PHE (F)214.29%
Isoleucine ILE (I)00%
Histidine HIS (H)00%
Lysine LYS (K)17.14%
Methionine MET (M)17.14%
Leucine LEU (L)17.14%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)214.29%
Serine SER (S)17.14%
Arginine ARG (R)214.29%
Threonine THR (T)17.14%
Tryptophan TRP (W)214.29%
Valine VAL (V)00%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC88
HydrogenH125
NitrogenN23
OxygenO17
SulphurS1

FormulaC88H125N23O17S1
Total Number of Atoms:254


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    11000
Absorption 0.1% (=1 g/l)    6.080
Aromaticity:0.286

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 48.12

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[35.71, 28.57, 14.29]

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:27.8572
Grand average of hydropathicity (GRAVY):-0.61