Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2716
Number of amino acids:24
Molecular Weight:2694.96 Da
Theoretical pI:6


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)28.33%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)416.67%
Aspartic Acid ASP (D)00%
Glycine GLY (G)312.5%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)00%
Histidine HIS (H)28.33%
Lysine LYS (K)00%
Methionine MET (M)14.17%
Leucine LEU (L)28.33%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)00%
Serine SER (S)312.5%
Arginine ARG (R)312.5%
Threonine THR (T)14.17%
Tryptophan TRP (W)14.17%
Valine VAL (V)28.33%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC113
HydrogenH180
NitrogenN38
OxygenO37
SulphurS1

FormulaC113H180N38O37S1
Total Number of Atoms:369


Total number of positively charged residues (ARG + LYS):3
Total number of negatively charged residues (ASP + GLU):4
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)    2.041
Aromaticity:0.042

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 13.90

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[20.83, 25.00, 37.50]

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:65
Grand average of hydropathicity (GRAVY):-0.73