Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3670
Number of amino acids:11
Molecular Weight:1227.43 Da
Theoretical pI:8.73


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)19.09%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)19.09%
Histidine HIS (H)19.09%
Lysine LYS (K)00%
Methionine MET (M)00%
Leucine LEU (L)19.09%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)19.09%
Serine SER (S)218.18%
Arginine ARG (R)19.09%
Threonine THR (T)00%
Tryptophan TRP (W)00%
Valine VAL (V)218.18%
Tyrosine TYR (Y)19.09%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC56
HydrogenH90
NitrogenN16
OxygenO15
SulphurS0

FormulaC56H90N16O15S0
Total Number of Atoms:177


Total number of positively charged residues (ARG + LYS):1
Total number of negatively charged residues (ASP + GLU):0
Extinction Coefficient:This protein does not contain any Tryptophan residues. Experience shows that this could result in more than 10% error in the computed extinction coefficient.

Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    1490
Absorption 0.1% (=1 g/l)    1.214
Aromaticity:0.091

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 64.62

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[45.45, 36.36, 9.09]

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:123.636
Grand average of hydropathicity (GRAVY):0.37