Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4295
Number of amino acids:649
Molecular Weight:72167.03 Da
Theoretical pI:5.78


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)416.32%
Cysteine CYS (C)50.77%
Glutamic Acid GLU (E)314.78%
Aspartic Acid ASP (D)426.47%
Glycine GLY (G)528.01%
Phynylalanine PHE (F)294.47%
Isoleucine ILE (I)223.39%
Histidine HIS (H)162.47%
Lysine LYS (K)355.39%
Methionine MET (M)111.69%
Leucine LEU (L)568.63%
Asparagine ASN (N)284.31%
Glutamine GLN (Q)213.24%
Proline PRO (P)365.55%
Serine SER (S)649.86%
Arginine ARG (R)264.01%
Threonine THR (T)406.16%
Tryptophan TRP (W)192.93%
Valine VAL (V)497.55%
Tyrosine TYR (Y)264.01%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC3248
HydrogenH4930
NitrogenN862
OxygenO975
SulphurS16

FormulaC3248H4930N862O975S16
Total Number of Atoms:10031


Total number of positively charged residues (ARG + LYS):61
Total number of negatively charged residues (ASP + GLU):73
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    143490
Absorption 0.1% (=1 g/l)    1.988,   assuming all pairs of CYS residues form cystines

Ext. coefficient    143240
Absorption 0.1% (=1 g/l)    1.985,   assuming all CYS residues are reduced
Aromaticity:0.114

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 35.05

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[30.97, 27.73, 21.42]

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:75.0848
Grand average of hydropathicity (GRAVY):-0.36