Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5828
Number of amino acids:103
Molecular Weight:11743.55 Da
Theoretical pI:9.7


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)54.85%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)65.83%
Aspartic Acid ASP (D)21.94%
Glycine GLY (G)10.97%
Phynylalanine PHE (F)65.83%
Isoleucine ILE (I)21.94%
Histidine HIS (H)87.77%
Lysine LYS (K)1110.68%
Methionine MET (M)10.97%
Leucine LEU (L)54.85%
Asparagine ASN (N)43.88%
Glutamine GLN (Q)32.91%
Proline PRO (P)2524.27%
Serine SER (S)76.8%
Arginine ARG (R)32.91%
Threonine THR (T)21.94%
Tryptophan TRP (W)00%
Valine VAL (V)87.77%
Tyrosine TYR (Y)43.88%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC549
HydrogenH826
NitrogenN146
OxygenO140
SulphurS1

FormulaC549H826N146O140S1
Total Number of Atoms:1662


Total number of positively charged residues (ARG + LYS):14
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    5960
Absorption 0.1% (=1 g/l)    0.508
Aromaticity:0.097

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 89.66

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[24.27, 35.92, 16.50]

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:53.8835
Grand average of hydropathicity (GRAVY):-0.95