Physicochemical Properties of Peptide



PPepDB ID:PPepDB_6063
Number of amino acids:86
Molecular Weight:9864.4 Da
Theoretical pI:6.57


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)55.81%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)66.98%
Aspartic Acid ASP (D)22.33%
Glycine GLY (G)11.16%
Phynylalanine PHE (F)33.49%
Isoleucine ILE (I)33.49%
Histidine HIS (H)66.98%
Lysine LYS (K)78.14%
Methionine MET (M)22.33%
Leucine LEU (L)1011.63%
Asparagine ASN (N)44.65%
Glutamine GLN (Q)55.81%
Proline PRO (P)1213.95%
Serine SER (S)55.81%
Arginine ARG (R)00%
Threonine THR (T)33.49%
Tryptophan TRP (W)11.16%
Valine VAL (V)78.14%
Tyrosine TYR (Y)44.65%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC458
HydrogenH699
NitrogenN115
OxygenO124
SulphurS2

FormulaC458H699N115O124S2
Total Number of Atoms:1398


Total number of positively charged residues (ARG + LYS):7
Total number of negatively charged residues (ASP + GLU):8
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    11460
Absorption 0.1% (=1 g/l)    1.162
Aromaticity:0.093

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 77.18

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[32.56, 25.58, 26.74]

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:88.372
Grand average of hydropathicity (GRAVY):-0.41