Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5013
Number of amino acids:146
Molecular Weight:16012.17 Da
Theoretical pI:6.03


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)74.79%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)53.42%
Aspartic Acid ASP (D)85.48%
Glycine GLY (G)85.48%
Phynylalanine PHE (F)64.11%
Isoleucine ILE (I)149.59%
Histidine HIS (H)64.11%
Lysine LYS (K)42.74%
Methionine MET (M)21.37%
Leucine LEU (L)117.53%
Asparagine ASN (N)32.05%
Glutamine GLN (Q)74.79%
Proline PRO (P)2013.7%
Serine SER (S)149.59%
Arginine ARG (R)64.11%
Threonine THR (T)149.59%
Tryptophan TRP (W)00%
Valine VAL (V)64.11%
Tyrosine TYR (Y)53.42%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC724
HydrogenH1126
NitrogenN190
OxygenO216
SulphurS2

FormulaC724H1126N190O216S2
Total Number of Atoms:2258


Total number of positively charged residues (ARG + LYS):10
Total number of negatively charged residues (ASP + GLU):13
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    7450
Absorption 0.1% (=1 g/l)    0.465
Aromaticity:0.075

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 59.35

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[28.77, 30.82, 17.12]

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:83.4932
Grand average of hydropathicity (GRAVY):-0.29