Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3587
Number of amino acids:27
Molecular Weight:3051.47 Da
Theoretical pI:12.18


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)27.41%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)13.7%
Glycine GLY (G)414.81%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)00%
Histidine HIS (H)00%
Lysine LYS (K)13.7%
Methionine MET (M)00%
Leucine LEU (L)27.41%
Asparagine ASN (N)311.11%
Glutamine GLN (Q)00%
Proline PRO (P)13.7%
Serine SER (S)00%
Arginine ARG (R)518.52%
Threonine THR (T)311.11%
Tryptophan TRP (W)27.41%
Valine VAL (V)311.11%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC132
HydrogenH216
NitrogenN48
OxygenO36
SulphurS0

FormulaC132H216N48O36S0
Total Number of Atoms:432


Total number of positively charged residues (ARG + LYS):6
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    11000
Absorption 0.1% (=1 g/l)    3.605
Aromaticity:0.074

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 17.98

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[25.93, 29.63, 14.81]

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:68.5185
Grand average of hydropathicity (GRAVY):-0.88