Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3527
Number of amino acids:18
Molecular Weight:1840.97 Da
Theoretical pI:5.08


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)316.67%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)15.56%
Glycine GLY (G)211.11%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)00%
Histidine HIS (H)15.56%
Lysine LYS (K)00%
Methionine MET (M)00%
Leucine LEU (L)00%
Asparagine ASN (N)211.11%
Glutamine GLN (Q)00%
Proline PRO (P)211.11%
Serine SER (S)211.11%
Arginine ARG (R)00%
Threonine THR (T)00%
Tryptophan TRP (W)15.56%
Valine VAL (V)316.67%
Tyrosine TYR (Y)15.56%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC82
HydrogenH117
NitrogenN23
OxygenO26
SulphurS0

FormulaC82H117N23O26S0
Total Number of Atoms:248


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

Ext. coefficient    6990
Absorption 0.1% (=1 g/l)    3.797
Aromaticity:0.111

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 22.93

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[27.78, 44.44, 16.67]

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:65.0001
Grand average of hydropathicity (GRAVY):-0.19