Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2075
Number of amino acids:49
Molecular Weight:5700.24 Da
Theoretical pI:8.06


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)510.2%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)12.04%
Aspartic Acid ASP (D)36.12%
Glycine GLY (G)24.08%
Phynylalanine PHE (F)24.08%
Isoleucine ILE (I)12.04%
Histidine HIS (H)00%
Lysine LYS (K)12.04%
Methionine MET (M)00%
Leucine LEU (L)510.2%
Asparagine ASN (N)714.29%
Glutamine GLN (Q)24.08%
Proline PRO (P)36.12%
Serine SER (S)36.12%
Arginine ARG (R)48.16%
Threonine THR (T)36.12%
Tryptophan TRP (W)12.04%
Valine VAL (V)12.04%
Tyrosine TYR (Y)510.2%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC255
HydrogenH378
NitrogenN72
OxygenO78
SulphurS0

FormulaC255H378N72O78S0
Total Number of Atoms:783


Total number of positively charged residues (ARG + LYS):5
Total number of negatively charged residues (ASP + GLU):4
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    12950
Absorption 0.1% (=1 g/l)    2.272
Aromaticity:0.163

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 7.43

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[30.61, 30.61, 22.45]

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:63.8777
Grand average of hydropathicity (GRAVY):-0.87