Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5208
Number of amino acids:329
Molecular Weight:34666.8 Da
Theoretical pI:9.66


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)226.69%
Cysteine CYS (C)30.91%
Glutamic Acid GLU (E)61.82%
Aspartic Acid ASP (D)175.17%
Glycine GLY (G)3811.55%
Phynylalanine PHE (F)226.69%
Isoleucine ILE (I)133.95%
Histidine HIS (H)10.3%
Lysine LYS (K)319.42%
Methionine MET (M)30.91%
Leucine LEU (L)309.12%
Asparagine ASN (N)123.65%
Glutamine GLN (Q)51.52%
Proline PRO (P)154.56%
Serine SER (S)3811.55%
Arginine ARG (R)82.43%
Threonine THR (T)257.6%
Tryptophan TRP (W)20.61%
Valine VAL (V)298.81%
Tyrosine TYR (Y)92.74%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1570
HydrogenH2485
NitrogenN405
OxygenO465
SulphurS6

FormulaC1570H2485N405O465S6
Total Number of Atoms:4931


Total number of positively charged residues (ARG + LYS):39
Total number of negatively charged residues (ASP + GLU):23
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    24535
Absorption 0.1% (=1 g/l)    0.708,   assuming all pairs of CYS residues form cystines

Ext. coefficient    24410
Absorption 0.1% (=1 g/l)    0.704,   assuming all CYS residues are reduced
Aromaticity:0.100

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 19.01

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[31.91, 31.31, 18.54]

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:83.2219
Grand average of hydropathicity (GRAVY):0.02