Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4506
Number of amino acids:667
Molecular Weight:73522.32 Da
Theoretical pI:5.07


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)537.95%
Cysteine CYS (C)40.6%
Glutamic Acid GLU (E)629.3%
Aspartic Acid ASP (D)527.8%
Glycine GLY (G)588.7%
Phynylalanine PHE (F)243.6%
Isoleucine ILE (I)497.35%
Histidine HIS (H)50.75%
Lysine LYS (K)639.45%
Methionine MET (M)101.5%
Leucine LEU (L)507.5%
Asparagine ASN (N)284.2%
Glutamine GLN (Q)223.3%
Proline PRO (P)203%
Serine SER (S)263.9%
Arginine ARG (R)304.5%
Threonine THR (T)446.6%
Tryptophan TRP (W)30.45%
Valine VAL (V)497.35%
Tyrosine TYR (Y)152.25%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC3242
HydrogenH5229
NitrogenN883
OxygenO1031
SulphurS14

FormulaC3242H5229N883O1031S14
Total Number of Atoms:10399


Total number of positively charged residues (ARG + LYS):93
Total number of negatively charged residues (ASP + GLU):114
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    39100
Absorption 0.1% (=1 g/l)    0.532,   assuming all pairs of CYS residues form cystines

Ext. coefficient    38850
Absorption 0.1% (=1 g/l)    0.528,   assuming all CYS residues are reduced
Aromaticity:0.063

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 28.31

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[28.49, 19.79, 26.24]

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:87.1364
Grand average of hydropathicity (GRAVY):-0.44