Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3292
Number of amino acids:18
Molecular Weight:2288.77 Da
Theoretical pI:11


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)15.56%
Glycine GLY (G)15.56%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)15.56%
Histidine HIS (H)15.56%
Lysine LYS (K)211.11%
Methionine MET (M)00%
Leucine LEU (L)527.78%
Asparagine ASN (N)15.56%
Glutamine GLN (Q)15.56%
Proline PRO (P)00%
Serine SER (S)00%
Arginine ARG (R)211.11%
Threonine THR (T)00%
Tryptophan TRP (W)211.11%
Valine VAL (V)15.56%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC108
HydrogenH174
NitrogenN32
OxygenO23
SulphurS0

FormulaC108H174N32O23S0
Total Number of Atoms:337


Total number of positively charged residues (ARG + LYS):4
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    11000
Absorption 0.1% (=1 g/l)    4.806
Aromaticity:0.111

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 56.56

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[50.00, 11.11, 27.78]

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:146.111
Grand average of hydropathicity (GRAVY):-0.28