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Literature summary for 1.11.1.6 extracted from

  • Hochman, A.; Shemesh, A.
    Purification and characterization of a catalase-peroxidase from the photosynthetic bacterium Rhodopseudomonas capsulata (1987), J. Biol. Chem., 262, 6871-6876.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
H2O2
-
Rhodobacter capsulatus
hydroxylamine 50% inhibition for catalase at 0.002 mM, for peroxidase at 0.078 mM Rhodobacter capsulatus
KCN 50% inhibition of both catalase and peroxidase activities at 0.02 mM Rhodobacter capsulatus
NaN3 50% inhibition for catalase at 0.15 mM, for peroxidase at 0.73 mM Rhodobacter capsulatus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
59000
-
4 * 59000, SDS-PAGE Rhodobacter capsulatus
236000
-
gel filtration Rhodobacter capsulatus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
H2O2 Rhodobacter capsulatus bifunctional catalase-peroxidase O2 + H2O
-
?

Organism

Organism UniProt Comment Textmining
Rhodobacter capsulatus
-
-
-

Oxidation Stability

Oxidation Stability Organism
sensitive to photooxidation Rhodobacter capsulatus

Purification (Commentary)

Purification (Comment) Organism
to homogeneity, chromatography techniques Rhodobacter capsulatus

Source Tissue

Source Tissue Comment Organism Textmining
cell culture
-
Rhodobacter capsulatus
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3,3'-diaminobenzidine + H2O2
-
Rhodobacter capsulatus ? + H2O
-
?
H2O2 bifunctional catalase-peroxidase Rhodobacter capsulatus O2 + H2O
-
?
o-dianisidine + H2O2
-
Rhodobacter capsulatus ? + H2O
-
?
pyrogallol + H2O2
-
Rhodobacter capsulatus ? + H2O
-
?

Subunits

Subunits Comment Organism
tetramer 4 * 59000, SDS-PAGE Rhodobacter capsulatus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
50
-
loss of both catalase-peroxidase activities Rhodobacter capsulatus

Cofactor

Cofactor Comment Organism Structure
heme 1-1.2 protoheme IX per tetramer Rhodobacter capsulatus