Physicochemical Properties of Peptide



PPepDB ID:PPepDB_6056
Number of amino acids:93
Molecular Weight:10632.33 Da
Theoretical pI:9.35


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)44.3%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)66.45%
Aspartic Acid ASP (D)22.15%
Glycine GLY (G)11.08%
Phynylalanine PHE (F)55.38%
Isoleucine ILE (I)22.15%
Histidine HIS (H)88.6%
Lysine LYS (K)88.6%
Methionine MET (M)11.08%
Leucine LEU (L)77.53%
Asparagine ASN (N)33.23%
Glutamine GLN (Q)33.23%
Proline PRO (P)2425.81%
Serine SER (S)44.3%
Arginine ARG (R)33.23%
Threonine THR (T)22.15%
Tryptophan TRP (W)00%
Valine VAL (V)77.53%
Tyrosine TYR (Y)33.23%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC499
HydrogenH752
NitrogenN132
OxygenO125
SulphurS1

FormulaC499H752N132O125S1
Total Number of Atoms:1509


Total number of positively charged residues (ARG + LYS):11
Total number of negatively charged residues (ASP + GLU):8
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    4470
Absorption 0.1% (=1 g/l)    0.420
Aromaticity:0.086

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 90.47

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[25.81, 34.41, 19.35]

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:63.871
Grand average of hydropathicity (GRAVY):-0.84