Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3199
Number of amino acids:13
Molecular Weight:1853.16 Da
Theoretical pI:11.17


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)17.69%
Phynylalanine PHE (F)17.69%
Isoleucine ILE (I)00%
Histidine HIS (H)00%
Lysine LYS (K)215.38%
Methionine MET (M)00%
Leucine LEU (L)00%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)00%
Serine SER (S)17.69%
Arginine ARG (R)17.69%
Threonine THR (T)17.69%
Tryptophan TRP (W)538.46%
Valine VAL (V)17.69%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC96
HydrogenH121
NitrogenN23
OxygenO16
SulphurS0

FormulaC96H121N23O16S0
Total Number of Atoms:256


Total number of positively charged residues (ARG + LYS):3
Total number of negatively charged residues (ASP + GLU):0
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    27500
Absorption 0.1% (=1 g/l)    14.839
Aromaticity:0.462

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 28.67

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[53.85, 15.38, 0.00]

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:22.3077
Grand average of hydropathicity (GRAVY):-0.90