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MoleculeMETABOLITE RECORD

Ubiquinone

A membrane-soluble electron carrier in the respiratory chain.

Oxidative phosphorylationHomo sapiens
REFERENCE IDENTIFIER record
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Learn about Ubiquinone

Ubiquinone is a small molecule that cells make, use, or change in connected metabolic reactions.

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Record type: molecule. A membrane-soluble electron carrier in the respiratory chain.
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Connected records

6 links
Used and produced inOxidative phosphorylationUsed inPyrimidine nucleotide synthesisHandled byRespiratory complex IHandled byRespiratory complex IIHandled byRespiratory complex IIIHandled byDihydroorotate dehydrogenase
STRUCTURED REACTIONS

Where it appears

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1

NADH oxidation at complex I

Complex I transfers electrons from NADH to ubiquinone and pumps protons.

Oxidative phosphorylation · irreversible
2

Succinate-linked electron entry

Complex II transfers succinate-derived electrons to ubiquinone without pumping protons.

Oxidative phosphorylation · irreversible
3

Ubiquinol oxidation at complex III

Complex III passes electrons from ubiquinol to cytochrome c and contributes to proton translocation.

Oxidative phosphorylation · irreversible