Any feedback?
Please rate this page
(literature.php)
(0/150)

BRENDA support

Literature summary for 1.11.1.6 extracted from

  • Hicks, D.B.
    Purification of three catalase isoenzymes from facultatively alkaliphilic Bacillus firmus OF4 (1995), Biochim. Biophys. Acta, 1229, 347-355.
    View publication on PubMed

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2
-
H2O2 isoenzyme I Cytobacillus firmus
36
-
H2O2 isoenzyme II Cytobacillus firmus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
60000
-
x * 84000, isoenzyme I, x * 60000, isoenzyme II, x * 80000, isoenzyme III, SDS-PAGE Cytobacillus firmus
80000
-
x * 84000, isoenzyme I, x * 60000, isoenzyme II, x * 80000, isoenzyme III, SDS-PAGE Cytobacillus firmus
84000
-
x * 84000, isoenzyme I, x * 60000, isoenzyme II, x * 80000, isoenzyme III, SDS-PAGE Cytobacillus firmus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
H2O2 Cytobacillus firmus two monofunctional, one bifunctional catalase-peroxidase O2 + H2O
-
?
H2O2 Cytobacillus firmus OF4 two monofunctional, one bifunctional catalase-peroxidase O2 + H2O
-
?

Organism

Organism UniProt Comment Textmining
Cytobacillus firmus
-
-
-
Cytobacillus firmus OF4
-
-
-

Purification (Commentary)

Purification (Comment) Organism
near homogeneity, 3 isoenzymes Cytobacillus firmus

Source Tissue

Source Tissue Comment Organism Textmining
cell culture
-
Cytobacillus firmus
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
4000
-
isoenzyme I Cytobacillus firmus
8000
-
isoenzyme II Cytobacillus firmus
75000
-
isoenzyme II Cytobacillus firmus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) + H2O2 only isoenzyme I has peroxidase activity Cytobacillus firmus ? + H2O
-
?
2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) + H2O2 only isoenzyme I has peroxidase activity Cytobacillus firmus OF4 ? + H2O
-
?
H2O2 two monofunctional, one bifunctional catalase-peroxidase Cytobacillus firmus O2 + H2O
-
?
H2O2 two monofunctional, one bifunctional catalase-peroxidase Cytobacillus firmus OF4 O2 + H2O
-
?
o-methoxyphenol + H2O2 only isoenzyme I has peroxidase activity Cytobacillus firmus ? + H2O
-
?
o-methoxyphenol + H2O2 i.e. guaiacol Cytobacillus firmus ? + H2O
-
?
o-methoxyphenol + H2O2 only isoenzyme I has peroxidase activity Cytobacillus firmus OF4 ? + H2O
-
?
o-methoxyphenol + H2O2 i.e. guaiacol Cytobacillus firmus OF4 ? + H2O
-
?

Subunits

Subunits Comment Organism
? x * 84000, isoenzyme I, x * 60000, isoenzyme II, x * 80000, isoenzyme III, SDS-PAGE Cytobacillus firmus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.5
-
optimal activity below pH 6.5 Cytobacillus firmus
8
-
isoenzyme I Cytobacillus firmus
8 10.5 isoenzyme II Cytobacillus firmus

Cofactor

Cofactor Comment Organism Structure
heme isoenzymes I and II contain protoheme, isoenzyme II contains chlorine-type heme Cytobacillus firmus