Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2274
Number of amino acids:14
Molecular Weight:1568.84 Da
Theoretical pI:10


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)17.14%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)17.14%
Aspartic Acid ASP (D)00%
Glycine GLY (G)17.14%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)00%
Histidine HIS (H)00%
Lysine LYS (K)428.57%
Methionine MET (M)00%
Leucine LEU (L)17.14%
Asparagine ASN (N)00%
Glutamine GLN (Q)321.43%
Proline PRO (P)17.14%
Serine SER (S)17.14%
Arginine ARG (R)00%
Threonine THR (T)00%
Tryptophan TRP (W)00%
Valine VAL (V)17.14%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC68
HydrogenH121
NitrogenN21
OxygenO21
SulphurS0

FormulaC68H121N21O21S0
Total Number of Atoms:231


Total number of positively charged residues (ARG + LYS):4
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 : 48.55

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[14.29, 21.43, 21.43]

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:55.7143
Grand average of hydropathicity (GRAVY):-1.61