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Literature summary for 1.11.1.6 extracted from

  • Brown-Petersen, N.J.; Salin, M.L.
    Purification of a catalase-peroxidase from Halobacterium halobium: Characterization of some unique properties of the halophilic enzyme (1993), J. Bacteriol., 175, 4197-4202.
    View publication on PubMedView publication on EuropePMC

Activating Compound

Activating Compound Comment Organism Structure
NaCl highest activity for catalase at 2 M, for peroxidase at 1 M Halobacterium salinarum

Inhibitors

Inhibitors Comment Organism Structure
3-amino-1H-1,2,4-triazole not inhibitory Halobacterium salinarum
H2O2 50% inhibition for catalase at 4.5 mM, for peroxidase at 0.4 mM Halobacterium salinarum
KCN effective inhibition Halobacterium salinarum
NaN3 effective inhibition Halobacterium salinarum

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.14
-
H2O2 peroxidase activity Halobacterium salinarum
3.7
-
H2O2 catalase activity Halobacterium salinarum

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
60300
-
4 * 60300, SDS-PAGE Halobacterium salinarum
240000
-
gel filtration Halobacterium salinarum

Natural Substrates/ Products (Substrates)

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

Organism

Organism UniProt Comment Textmining
Halobacterium salinarum
-
-
-

Purification (Commentary)

Purification (Comment) Organism
to homogeneity, chromatography steps Halobacterium salinarum

Source Tissue

Source Tissue Comment Organism Textmining
cell culture
-
Halobacterium salinarum
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
43.2
-
catalase activity Halobacterium salinarum
104.3
-
peroxidase activity Halobacterium salinarum

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3,3'-diaminobenzidine + H2O2
-
Halobacterium salinarum ? + H2O
-
?
4-aminoantipyrine + H2O2
-
Halobacterium salinarum ? + H2O
-
?
ascorbate + H2O2
-
Halobacterium salinarum ? + H2O
-
?
H2O2 bifunctional catalase-peroxidase Halobacterium salinarum O2 + H2O
-
?
NADH + H2O2
-
Halobacterium salinarum NAD+ + H2O
-
?
NADPH + H2O2
-
Halobacterium salinarum NADP+ + H2O
-
?
o-dianisidine + H2O2
-
Halobacterium salinarum ? + H2O
-
?
reduced cytochrome c + H2O2
-
Halobacterium salinarum oxidized cytochrome c + H2O
-
?

Subunits

Subunits Comment Organism
tetramer 4 * 60300, SDS-PAGE Halobacterium salinarum

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
40
-
peroxidase activity Halobacterium salinarum
50
-
catalase activity Halobacterium salinarum

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
70
-
50% of activity retained for peroxidase activity Halobacterium salinarum
90
-
catalase activity stable up to Halobacterium salinarum

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.5
-
catalase activity Halobacterium salinarum
7.5
-
peroxidase activity Halobacterium salinarum

Cofactor

Cofactor Comment Organism Structure
heme 1.43 hemes per tetramer Halobacterium salinarum

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
0.03
-
NaN3
-
Halobacterium salinarum
0.05
-
KCN
-
Halobacterium salinarum