Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3263
Number of amino acids:12
Molecular Weight:1408.62 Da
Theoretical pI:8.75


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)216.67%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)00%
Glycine GLY (G)18.33%
Phynylalanine PHE (F)18.33%
Isoleucine ILE (I)216.67%
Histidine HIS (H)00%
Lysine LYS (K)00%
Methionine MET (M)00%
Leucine LEU (L)00%
Asparagine ASN (N)00%
Glutamine GLN (Q)18.33%
Proline PRO (P)18.33%
Serine SER (S)18.33%
Arginine ARG (R)18.33%
Threonine THR (T)00%
Tryptophan TRP (W)18.33%
Valine VAL (V)00%
Tyrosine TYR (Y)18.33%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC68
HydrogenH97
NitrogenN17
OxygenO16
SulphurS0

FormulaC68H97N17O16S0
Total Number of Atoms:198


Total number of positively charged residues (ARG + LYS):1
Total number of negatively charged residues (ASP + GLU):0
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    6990
Absorption 0.1% (=1 g/l)    4.962
Aromaticity:0.250

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 52.38

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[41.67, 25.00, 16.67]

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:81.6668
Grand average of hydropathicity (GRAVY):0.20