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Information on EC 1.10.3.12 - menaquinol oxidase (H+-transporting)
for references in articles please use BRENDA:EC1.10.3.12transferred to EC 7.1.1.5
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1.10.3.12 menaquinol oxidase (H+-transporting)Synonyms
Q10H2 oxidase, 
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SYNONYM 
ORGANISM
UNIPROT
COMMENTARY 
LITERATURE
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SUBSTRATE
PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
menaquinol-4 + O2
menaquinone-4 + H2O
-
menaquinols are oxidized at 6-12fold higher rates than ubiquinols
-
-
?
thermoplasmaquinol + O2
thermoplasmaquinone + H2O
-
likely candidate to the physiological electron donor
-
-
?
ubiquinol-10 + O2
ubiquinone-10 + H2O
-
menaquinols are oxidized at 6-12fold higher rates than ubiquinols. However, because of the greater tendency for autoxidation of menaquinols, ubiquinol is a more convenient substrate for the enzyme assay
-
-
?
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NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
thermoplasmaquinol + O2
thermoplasmaquinone + H2O
-
likely candidate to the physiological electron donor
-
-
?
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COFACTOR
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
IMAGE
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INHIBITOR
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
IMAGE
Lipid
-
addition of total lipids from Thermoplasma acidophilum decreases activity
additional information
-
antimycin A, myxothiazol, methyl 3-methoxy-2-(2-styrylphenyl) propenate and stigmatellin (at concentration up to 0.030 mM) and Zn2+ at a concentration up to 1 mM, do not inhibit
-
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KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
IMAGE
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Ki VALUE [mM]
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
IMAGE
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pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
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TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
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ORGANISM
COMMENTARY
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
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LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY
GeneOntology No.
LITERATURE
SOURCE
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MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
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SUBUNIT
ORGANISM
UNIPROT
COMMENTARY
LITERATURE
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GENERAL STABILITY
ORGANISM
UNIPROT
LITERATURE
addition of total lipids from Thermoplasma acidophilum increases stability
-
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PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
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REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Gartner, P.
Characterization of a quinole-oxidase activity in crude extracts of Thermoplasma acidophilum and isolation of an 18-kDa cytochrome
Eur. J. Biochem.
200
215-222
1991
Thermoplasma acidophilum
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