Physicochemical Properties of Peptide



PPepDB ID:PPepDB_102
Number of amino acids:4
Molecular Weight:501.62 Da
Theoretical pI:6


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)00%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)125%
Aspartic Acid ASP (D)00%
Glycine GLY (G)00%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)125%
Histidine HIS (H)00%
Lysine LYS (K)125%
Methionine MET (M)00%
Leucine LEU (L)125%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)00%
Serine SER (S)00%
Arginine ARG (R)00%
Threonine THR (T)00%
Tryptophan TRP (W)00%
Valine VAL (V)00%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC23
HydrogenH43
NitrogenN5
OxygenO7
SulphurS0

FormulaC23H43N5O7S0
Total Number of Atoms:78


Total number of positively charged residues (ARG + LYS):1
Total number of negatively charged residues (ASP + GLU):1
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 : 96.12

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[50.00, 0.00, 50.00]

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:195
Grand average of hydropathicity (GRAVY):0.23