Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4048
Number of amino acids:724
Molecular Weight:80591.19 Da
Theoretical pI:8.88


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)557.6%
Cysteine CYS (C)141.93%
Glutamic Acid GLU (E)344.7%
Aspartic Acid ASP (D)283.87%
Glycine GLY (G)689.39%
Phynylalanine PHE (F)334.56%
Isoleucine ILE (I)354.83%
Histidine HIS (H)152.07%
Lysine LYS (K)527.18%
Methionine MET (M)172.35%
Leucine LEU (L)557.6%
Asparagine ASN (N)354.83%
Glutamine GLN (Q)212.9%
Proline PRO (P)405.52%
Serine SER (S)517.04%
Arginine ARG (R)233.18%
Threonine THR (T)425.8%
Tryptophan TRP (W)263.59%
Valine VAL (V)476.49%
Tyrosine TYR (Y)334.56%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC3671
HydrogenH5561
NitrogenN957
OxygenO1031
SulphurS31

FormulaC3671H5561N957O1031S31
Total Number of Atoms:11251


Total number of positively charged residues (ARG + LYS):75
Total number of negatively charged residues (ASP + GLU):62
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    193045
Absorption 0.1% (=1 g/l)    2.395,   assuming all pairs of CYS residues form cystines

Ext. coefficient    192170
Absorption 0.1% (=1 g/l)    2.385,   assuming all CYS residues are reduced
Aromaticity:0.127

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 33.96

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[31.63, 26.80, 22.24]

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:74.9033
Grand average of hydropathicity (GRAVY):-0.24