Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4563
Number of amino acids:538
Molecular Weight:61695.47 Da
Theoretical pI:8.54


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)305.58%
Cysteine CYS (C)101.86%
Glutamic Acid GLU (E)387.06%
Aspartic Acid ASP (D)285.2%
Glycine GLY (G)325.95%
Phynylalanine PHE (F)244.46%
Isoleucine ILE (I)346.32%
Histidine HIS (H)132.42%
Lysine LYS (K)305.58%
Methionine MET (M)213.9%
Leucine LEU (L)5510.22%
Asparagine ASN (N)244.46%
Glutamine GLN (Q)132.42%
Proline PRO (P)325.95%
Serine SER (S)275.02%
Arginine ARG (R)417.62%
Threonine THR (T)305.58%
Tryptophan TRP (W)81.49%
Valine VAL (V)325.95%
Tyrosine TYR (Y)162.97%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2759
HydrogenH4360
NitrogenN762
OxygenO781
SulphurS31

FormulaC2759H4360N762O781S31
Total Number of Atoms:8693


Total number of positively charged residues (ARG + LYS):71
Total number of negatively charged residues (ASP + GLU):66
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    68465
Absorption 0.1% (=1 g/l)    1.110,   assuming all pairs of CYS residues form cystines

Ext. coefficient    67840
Absorption 0.1% (=1 g/l)    1.100,   assuming all CYS residues are reduced
Aromaticity:0.089

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 41.90

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[31.41, 21.38, 26.77]

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:87.3418
Grand average of hydropathicity (GRAVY):-0.29