Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5178
Number of amino acids:579
Molecular Weight:64667.64 Da
Theoretical pI:6.09


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)345.87%
Cysteine CYS (C)71.21%
Glutamic Acid GLU (E)305.18%
Aspartic Acid ASP (D)254.32%
Glycine GLY (G)498.46%
Phynylalanine PHE (F)305.18%
Isoleucine ILE (I)417.08%
Histidine HIS (H)213.63%
Lysine LYS (K)274.66%
Methionine MET (M)122.07%
Leucine LEU (L)467.94%
Asparagine ASN (N)396.74%
Glutamine GLN (Q)172.94%
Proline PRO (P)488.29%
Serine SER (S)325.53%
Arginine ARG (R)183.11%
Threonine THR (T)325.53%
Tryptophan TRP (W)142.42%
Valine VAL (V)356.04%
Tyrosine TYR (Y)223.8%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2951
HydrogenH4454
NitrogenN772
OxygenO832
SulphurS19

FormulaC2951H4454N772O832S19
Total Number of Atoms:9028


Total number of positively charged residues (ARG + LYS):45
Total number of negatively charged residues (ASP + GLU):55
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    110155
Absorption 0.1% (=1 g/l)    1.703,   assuming all pairs of CYS residues form cystines

Ext. coefficient    109780
Absorption 0.1% (=1 g/l)    1.698,   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 : 36.20

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[32.47, 29.02, 21.07]

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:82.0034
Grand average of hydropathicity (GRAVY):-0.23