Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4652
Number of amino acids:580
Molecular Weight:64907.41 Da
Theoretical pI:6.29


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)345.86%
Cysteine CYS (C)101.72%
Glutamic Acid GLU (E)305.17%
Aspartic Acid ASP (D)274.66%
Glycine GLY (G)417.07%
Phynylalanine PHE (F)284.83%
Isoleucine ILE (I)335.69%
Histidine HIS (H)264.48%
Lysine LYS (K)183.1%
Methionine MET (M)172.93%
Leucine LEU (L)457.76%
Asparagine ASN (N)315.34%
Glutamine GLN (Q)101.72%
Proline PRO (P)508.62%
Serine SER (S)244.14%
Arginine ARG (R)305.17%
Threonine THR (T)457.76%
Tryptophan TRP (W)81.38%
Valine VAL (V)528.97%
Tyrosine TYR (Y)213.62%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2934
HydrogenH4499
NitrogenN789
OxygenO826
SulphurS27

FormulaC2934H4499N789O826S27
Total Number of Atoms:9075


Total number of positively charged residues (ARG + LYS):48
Total number of negatively charged residues (ASP + GLU):57
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    75915
Absorption 0.1% (=1 g/l)    1.170,   assuming all pairs of CYS residues form cystines

Ext. coefficient    75290
Absorption 0.1% (=1 g/l)    1.160,   assuming all CYS residues are reduced
Aromaticity:0.098

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 39.97

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[32.24, 25.17, 21.72]

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:84.3104
Grand average of hydropathicity (GRAVY):-0.14