Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5304
Number of amino acids:117
Molecular Weight:12455.96 Da
Theoretical pI:4.94


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)1714.53%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)108.55%
Aspartic Acid ASP (D)65.13%
Glycine GLY (G)108.55%
Phynylalanine PHE (F)21.71%
Isoleucine ILE (I)32.56%
Histidine HIS (H)21.71%
Lysine LYS (K)32.56%
Methionine MET (M)21.71%
Leucine LEU (L)86.84%
Asparagine ASN (N)32.56%
Glutamine GLN (Q)32.56%
Proline PRO (P)43.42%
Serine SER (S)86.84%
Arginine ARG (R)86.84%
Threonine THR (T)75.98%
Tryptophan TRP (W)21.71%
Valine VAL (V)1613.68%
Tyrosine TYR (Y)32.56%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC545
HydrogenH870
NitrogenN156
OxygenO174
SulphurS2

FormulaC545H870N156O174S2
Total Number of Atoms:1747


Total number of positively charged residues (ARG + LYS):11
Total number of negatively charged residues (ASP + GLU):16
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    15470
Absorption 0.1% (=1 g/l)    1.242
Aromaticity:0.060

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 25.07

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[29.06, 21.37, 31.62]

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:90.8546
Grand average of hydropathicity (GRAVY):-0.06