Physicochemical Properties of Peptide



PPepDB ID:PPepDB_603
Number of amino acids:239
Molecular Weight:25249.46 Da
Theoretical pI:4.47


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)2811.72%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)93.77%
Aspartic Acid ASP (D)135.44%
Glycine GLY (G)177.11%
Phynylalanine PHE (F)177.11%
Isoleucine ILE (I)135.44%
Histidine HIS (H)20.84%
Lysine LYS (K)93.77%
Methionine MET (M)00%
Leucine LEU (L)218.79%
Asparagine ASN (N)93.77%
Glutamine GLN (Q)31.26%
Proline PRO (P)125.02%
Serine SER (S)2811.72%
Arginine ARG (R)31.26%
Threonine THR (T)208.37%
Tryptophan TRP (W)41.67%
Valine VAL (V)239.62%
Tyrosine TYR (Y)83.35%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1162
HydrogenH1767
NitrogenN277
OxygenO352
SulphurS0

FormulaC1162H1767N277O352S0
Total Number of Atoms:3558


Total number of positively charged residues (ARG + LYS):12
Total number of negatively charged residues (ASP + GLU):22
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    33920
Absorption 0.1% (=1 g/l)    1.343
Aromaticity:0.121

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 30.80

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[35.98, 27.62, 24.27]

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:95.1046
Grand average of hydropathicity (GRAVY):0.34