Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4190
Number of amino acids:452
Molecular Weight:50362.88 Da
Theoretical pI:9.24


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)245.31%
Cysteine CYS (C)183.98%
Glutamic Acid GLU (E)61.33%
Aspartic Acid ASP (D)143.1%
Glycine GLY (G)347.52%
Phynylalanine PHE (F)275.97%
Isoleucine ILE (I)245.31%
Histidine HIS (H)81.77%
Lysine LYS (K)265.75%
Methionine MET (M)81.77%
Leucine LEU (L)296.42%
Asparagine ASN (N)306.64%
Glutamine GLN (Q)224.87%
Proline PRO (P)347.52%
Serine SER (S)337.3%
Arginine ARG (R)132.88%
Threonine THR (T)388.41%
Tryptophan TRP (W)143.1%
Valine VAL (V)327.08%
Tyrosine TYR (Y)183.98%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2290
HydrogenH3463
NitrogenN599
OxygenO634
SulphurS26

FormulaC2290H3463N599O634S26
Total Number of Atoms:7012


Total number of positively charged residues (ARG + LYS):39
Total number of negatively charged residues (ASP + GLU):20
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    104945
Absorption 0.1% (=1 g/l)    2.084,   assuming all pairs of CYS residues form cystines

Ext. coefficient    103820
Absorption 0.1% (=1 g/l)    2.061,   assuming all CYS residues are reduced
Aromaticity:0.131

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 29.66

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[31.86, 28.98, 14.82]

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:71.5708
Grand average of hydropathicity (GRAVY):-0.14