Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2672
Number of amino acids:39
Molecular Weight:4121.92 Da
Theoretical pI:10.56


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)25.13%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)25.13%
Aspartic Acid ASP (D)00%
Glycine GLY (G)615.38%
Phynylalanine PHE (F)12.56%
Isoleucine ILE (I)25.13%
Histidine HIS (H)00%
Lysine LYS (K)512.82%
Methionine MET (M)25.13%
Leucine LEU (L)25.13%
Asparagine ASN (N)12.56%
Glutamine GLN (Q)25.13%
Proline PRO (P)410.26%
Serine SER (S)12.56%
Arginine ARG (R)25.13%
Threonine THR (T)37.69%
Tryptophan TRP (W)00%
Valine VAL (V)410.26%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC182
HydrogenH311
NitrogenN53
OxygenO51
SulphurS2

FormulaC182H311N53O51S2
Total Number of Atoms:599


Total number of positively charged residues (ARG + LYS):7
Total number of negatively charged residues (ASP + GLU):2
Extinction Coefficient:As there are no Tryptophan, Tyrosine or Cysteine in the region considered, your protein should not be visible by UV spectrophotometry.
Aromaticity:0.026

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 38.47

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[23.08, 30.77, 20.51]

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:74.8718
Grand average of hydropathicity (GRAVY):-0.36