Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4512
Number of amino acids:434
Molecular Weight:48456.54 Da
Theoretical pI:5.06


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)358.06%
Cysteine CYS (C)30.69%
Glutamic Acid GLU (E)235.3%
Aspartic Acid ASP (D)368.29%
Glycine GLY (G)4610.6%
Phynylalanine PHE (F)184.15%
Isoleucine ILE (I)296.68%
Histidine HIS (H)163.69%
Lysine LYS (K)204.61%
Methionine MET (M)112.53%
Leucine LEU (L)347.83%
Asparagine ASN (N)204.61%
Glutamine GLN (Q)133%
Proline PRO (P)204.61%
Serine SER (S)194.38%
Arginine ARG (R)173.92%
Threonine THR (T)184.15%
Tryptophan TRP (W)163.69%
Valine VAL (V)255.76%
Tyrosine TYR (Y)153.46%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2188
HydrogenH3286
NitrogenN586
OxygenO638
SulphurS14

FormulaC2188H3286N586O638S14
Total Number of Atoms:6712


Total number of positively charged residues (ARG + LYS):37
Total number of negatively charged residues (ASP + GLU):59
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    110475
Absorption 0.1% (=1 g/l)    2.280,   assuming all pairs of CYS residues form cystines

Ext. coefficient    110350
Absorption 0.1% (=1 g/l)    2.277,   assuming all CYS residues are reduced
Aromaticity:0.113

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 23.92

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[31.57, 24.19, 23.73]

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:81.3825
Grand average of hydropathicity (GRAVY):-0.31