Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5973
Number of amino acids:233
Molecular Weight:26066 Da
Theoretical pI:6.09


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)166.87%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)114.72%
Aspartic Acid ASP (D)52.15%
Glycine GLY (G)135.58%
Phynylalanine PHE (F)208.58%
Isoleucine ILE (I)2510.73%
Histidine HIS (H)41.72%
Lysine LYS (K)93.86%
Methionine MET (M)52.15%
Leucine LEU (L)3715.88%
Asparagine ASN (N)73%
Glutamine GLN (Q)62.58%
Proline PRO (P)135.58%
Serine SER (S)177.3%
Arginine ARG (R)52.15%
Threonine THR (T)135.58%
Tryptophan TRP (W)31.29%
Valine VAL (V)166.87%
Tyrosine TYR (Y)83.43%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1245
HydrogenH1929
NitrogenN281
OxygenO317
SulphurS5

FormulaC1245H1929N281O317S5
Total Number of Atoms:3777


Total number of positively charged residues (ARG + LYS):14
Total number of negatively charged residues (ASP + GLU):16
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    28420
Absorption 0.1% (=1 g/l)    1.090
Aromaticity:0.133

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 36.82

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[46.78, 21.46, 29.61]

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:130.558
Grand average of hydropathicity (GRAVY):0.78