Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2652
Number of amino acids:37
Molecular Weight:4251.79 Da
Theoretical pI:6.02


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)38.11%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)513.51%
Aspartic Acid ASP (D)12.7%
Glycine GLY (G)12.7%
Phynylalanine PHE (F)25.41%
Isoleucine ILE (I)25.41%
Histidine HIS (H)25.41%
Lysine LYS (K)38.11%
Methionine MET (M)12.7%
Leucine LEU (L)38.11%
Asparagine ASN (N)410.81%
Glutamine GLN (Q)12.7%
Proline PRO (P)12.7%
Serine SER (S)38.11%
Arginine ARG (R)25.41%
Threonine THR (T)00%
Tryptophan TRP (W)00%
Valine VAL (V)38.11%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC185
HydrogenH297
NitrogenN55
OxygenO58
SulphurS1

FormulaC185H297N55O58S1
Total Number of Atoms:596


Total number of positively charged residues (ARG + LYS):5
Total number of negatively charged residues (ASP + GLU):6
Extinction Coefficient:As there are no Tryptophan, Tyrosine or Cysteine in the region considered, your protein should not be visible by UV spectrophotometry.
Aromaticity:0.054

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 37.32

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[27.03, 24.32, 32.43]

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:84.3244
Grand average of hydropathicity (GRAVY):-0.65