Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3209
Number of amino acids:20
Molecular Weight:2052.14 Da
Theoretical pI:3.33


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)315%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)210%
Aspartic Acid ASP (D)315%
Glycine GLY (G)210%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)15%
Histidine HIS (H)00%
Lysine LYS (K)00%
Methionine MET (M)00%
Leucine LEU (L)210%
Asparagine ASN (N)315%
Glutamine GLN (Q)15%
Proline PRO (P)210%
Serine SER (S)00%
Arginine ARG (R)00%
Threonine THR (T)00%
Tryptophan TRP (W)00%
Valine VAL (V)15%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC85
HydrogenH134
NitrogenN24
OxygenO35
SulphurS0

FormulaC85H134N24O35S0
Total Number of Atoms:278


Total number of positively charged residues (ARG + LYS):0
Total number of negatively charged residues (ASP + GLU):5
Extinction Coefficient:As there are no Tryptophan, Tyrosine or Cysteine in the region considered, your protein should not be visible by UV spectrophotometry.
Aromaticity:0.000

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 35.76

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[20.00, 35.00, 35.00]

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
Grand average of hydropathicity (GRAVY):-0.69