Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2670
Number of amino acids:25
Molecular Weight:3129.9 Da
Theoretical pI:12.85


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)00%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)00%
Glycine GLY (G)312%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)00%
Histidine HIS (H)00%
Lysine LYS (K)624%
Methionine MET (M)312%
Leucine LEU (L)14%
Asparagine ASN (N)00%
Glutamine GLN (Q)14%
Proline PRO (P)00%
Serine SER (S)14%
Arginine ARG (R)832%
Threonine THR (T)14%
Tryptophan TRP (W)00%
Valine VAL (V)14%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC128
HydrogenH246
NitrogenN56
OxygenO29
SulphurS3

FormulaC128H246N56O29S3
Total Number of Atoms:462


Total number of positively charged residues (ARG + LYS):14
Total number of negatively charged residues (ASP + GLU):0
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 : 121.58

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[8.00, 16.00, 16.00]

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:27.2
Grand average of hydropathicity (GRAVY):-2.08