Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4244
Number of amino acids:247
Molecular Weight:27086.86 Da
Theoretical pI:5.93


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)187.29%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)104.05%
Aspartic Acid ASP (D)41.62%
Glycine GLY (G)228.91%
Phynylalanine PHE (F)176.88%
Isoleucine ILE (I)2510.12%
Histidine HIS (H)52.02%
Lysine LYS (K)72.83%
Methionine MET (M)31.21%
Leucine LEU (L)3313.36%
Asparagine ASN (N)83.24%
Glutamine GLN (Q)104.05%
Proline PRO (P)156.07%
Serine SER (S)156.07%
Arginine ARG (R)41.62%
Threonine THR (T)145.67%
Tryptophan TRP (W)52.02%
Valine VAL (V)228.91%
Tyrosine TYR (Y)104.05%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1289
HydrogenH1977
NitrogenN299
OxygenO333
SulphurS3

FormulaC1289H1977N299O333S3
Total Number of Atoms:3901


Total number of positively charged residues (ARG + LYS):11
Total number of negatively charged residues (ASP + GLU):14
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    42400
Absorption 0.1% (=1 g/l)    1.565
Aromaticity:0.130

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 27.09

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[45.34, 24.29, 25.91]

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:124.696
Grand average of hydropathicity (GRAVY):0.69