Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5896
Number of amino acids:104
Molecular Weight:11330.97 Da
Theoretical pI:5.54


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)1413.46%
Cysteine CYS (C)32.88%
Glutamic Acid GLU (E)54.81%
Aspartic Acid ASP (D)54.81%
Glycine GLY (G)54.81%
Phynylalanine PHE (F)43.85%
Isoleucine ILE (I)76.73%
Histidine HIS (H)21.92%
Lysine LYS (K)65.77%
Methionine MET (M)43.85%
Leucine LEU (L)98.65%
Asparagine ASN (N)87.69%
Glutamine GLN (Q)65.77%
Proline PRO (P)21.92%
Serine SER (S)76.73%
Arginine ARG (R)21.92%
Threonine THR (T)65.77%
Tryptophan TRP (W)21.92%
Valine VAL (V)65.77%
Tyrosine TYR (Y)10.96%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC496
HydrogenH790
NitrogenN136
OxygenO153
SulphurS7

FormulaC496H790N136O153S7
Total Number of Atoms:1582


Total number of positively charged residues (ARG + LYS):8
Total number of negatively charged residues (ASP + GLU):10
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    12615
Absorption 0.1% (=1 g/l)    1.113,   assuming all pairs of CYS residues form cystines

Ext. coefficient    12490
Absorption 0.1% (=1 g/l)    1.102,   assuming all CYS residues are reduced
Aromaticity:0.067

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 37.00

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[27.88, 21.15, 30.77]

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:90.1923
Grand average of hydropathicity (GRAVY):0.01