Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5607
Number of amino acids:246
Molecular Weight:27207.22 Da
Theoretical pI:5.03


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)156.1%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)93.66%
Aspartic Acid ASP (D)166.5%
Glycine GLY (G)93.66%
Phynylalanine PHE (F)135.28%
Isoleucine ILE (I)145.69%
Histidine HIS (H)41.63%
Lysine LYS (K)114.47%
Methionine MET (M)41.63%
Leucine LEU (L)208.13%
Asparagine ASN (N)218.54%
Glutamine GLN (Q)83.25%
Proline PRO (P)52.03%
Serine SER (S)3815.45%
Arginine ARG (R)72.85%
Threonine THR (T)197.72%
Tryptophan TRP (W)41.63%
Valine VAL (V)218.54%
Tyrosine TYR (Y)83.25%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1205
HydrogenH1867
NitrogenN319
OxygenO391
SulphurS4

FormulaC1205H1867N319O391S4
Total Number of Atoms:3786


Total number of positively charged residues (ARG + LYS):18
Total number of negatively charged residues (ASP + GLU):25
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    33920
Absorption 0.1% (=1 g/l)    1.247
Aromaticity:0.102

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 33.92

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[32.52, 29.67, 19.51]

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:84.7561
Grand average of hydropathicity (GRAVY):-0.19