Difference between revisions of "Alternative oxidase"
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{{MitoPedia | {{MitoPedia | ||
|abbr=AOX | |abbr=AOX | ||
|description=The alternative oxidase is a membrane-bound enzyme capable of supporting [[cyanide| cyanide]]-and [[Antimycin_A| antimycin A]]-resistant mitochondrial respiration. It catalyzes the oxidation of ubiquinol and the reduction of oxygen to water in a four electron process. As this bypasses several proton-translocating steps, inducton of this alternative pathway is associated with a dramatic reduction of ATP production. Expression and activity of the enzyme | |description=The alternative oxidase is a membrane-bound enzyme capable of supporting [[cyanide| cyanide]]-and [[Antimycin_A| antimycin A]]-resistant mitochondrial respiration. It catalyzes the oxidation of ubiquinol and the reduction of oxygen to water in a four electron process. As this bypasses several proton-translocating steps, inducton of this alternative pathway is associated with a dramatic reduction of ATP production. AOX is found in most plants (including microalgae), many fungi and protists, but is not expressed in animals. AOX is inhibited by [[salicylhydroxamic acid]] (SHAM). Expression and activity of the enzyme are modified by environmental conditions such as temperature, oxidative stress, nutrient availability, and pathogens such as viruses. | ||
|info=[http://www.ncbi.nlm.nih.gov/pubmed/24059524 Young 2013 Biochem Soc Trans] | |info=[http://www.ncbi.nlm.nih.gov/pubmed/24059524 Young 2013 Biochem Soc Trans] | ||
}} | }} | ||
{{MitoPedia topics | {{MitoPedia topics | ||
|mitopedia topic=Enzyme | |mitopedia topic=Enzyme | ||
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== SUITbrowser question: AOX activity == | == SUITbrowser question: AOX activity == | ||
Revision as of 08:19, 15 June 2019
- high-resolution terminology - matching measurements at high-resolution
Alternative oxidase
Description
The alternative oxidase is a membrane-bound enzyme capable of supporting cyanide-and antimycin A-resistant mitochondrial respiration. It catalyzes the oxidation of ubiquinol and the reduction of oxygen to water in a four electron process. As this bypasses several proton-translocating steps, inducton of this alternative pathway is associated with a dramatic reduction of ATP production. AOX is found in most plants (including microalgae), many fungi and protists, but is not expressed in animals. AOX is inhibited by salicylhydroxamic acid (SHAM). Expression and activity of the enzyme are modified by environmental conditions such as temperature, oxidative stress, nutrient availability, and pathogens such as viruses.
Abbreviation: AOX
Reference: Young 2013 Biochem Soc Trans
MitoPedia topics:
Enzyme
