Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5671
Number of amino acids:206
Molecular Weight:23336.36 Da
Theoretical pI:9.87


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)41.94%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)83.88%
Aspartic Acid ASP (D)00%
Glycine GLY (G)20.97%
Phynylalanine PHE (F)31.46%
Isoleucine ILE (I)10.49%
Histidine HIS (H)20.97%
Lysine LYS (K)3416.5%
Methionine MET (M)10.49%
Leucine LEU (L)62.91%
Asparagine ASN (N)20.97%
Glutamine GLN (Q)20.97%
Proline PRO (P)7435.92%
Serine SER (S)20.97%
Arginine ARG (R)00%
Threonine THR (T)00%
Tryptophan TRP (W)00%
Valine VAL (V)4019.42%
Tyrosine TYR (Y)2512.14%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1165
HydrogenH1760
NitrogenN248
OxygenO254
SulphurS1

FormulaC1165H1760N248O254S1
Total Number of Atoms:3428


Total number of positively charged residues (ARG + LYS):34
Total number of negatively charged residues (ASP + GLU):8
Extinction Coefficient:This protein does not contain any Tryptophan residues. Experience shows that this could result in more than 10% error in the computed extinction coefficient.

Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    37250
Absorption 0.1% (=1 g/l)    1.596
Aromaticity:0.136

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 58.71

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[36.41, 38.84, 9.22]

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:71.5049
Grand average of hydropathicity (GRAVY):-0.59