Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4234
Number of amino acids:785
Molecular Weight:86045.01 Da
Theoretical pI:8.27


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)678.54%
Cysteine CYS (C)70.89%
Glutamic Acid GLU (E)577.26%
Aspartic Acid ASP (D)425.35%
Glycine GLY (G)415.22%
Phynylalanine PHE (F)394.97%
Isoleucine ILE (I)283.57%
Histidine HIS (H)60.76%
Lysine LYS (K)536.75%
Methionine MET (M)151.91%
Leucine LEU (L)789.94%
Asparagine ASN (N)293.69%
Glutamine GLN (Q)202.55%
Proline PRO (P)749.43%
Serine SER (S)8310.57%
Arginine ARG (R)496.24%
Threonine THR (T)405.1%
Tryptophan TRP (W)70.89%
Valine VAL (V)435.48%
Tyrosine TYR (Y)70.89%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC3817
HydrogenH6089
NitrogenN1053
OxygenO1163
SulphurS22

FormulaC3817H6089N1053O1163S22
Total Number of Atoms:12144


Total number of positively charged residues (ARG + LYS):102
Total number of negatively charged residues (ASP + GLU):99
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    49305
Absorption 0.1% (=1 g/l)    0.573,   assuming all pairs of CYS residues form cystines

Ext. coefficient    48930
Absorption 0.1% (=1 g/l)    0.569,   assuming all CYS residues are reduced
Aromaticity:0.068

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 59.91

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[25.73, 28.92, 27.64]

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:77.0828
Grand average of hydropathicity (GRAVY):-0.42