ubiquinone

(noun)

A lipid soluble substance that is a component of the electron transport chain and accepts electrons from complexes I and II.

Related Terms

  • prosthetic group
  • complex

Examples of ubiquinone in the following topics:

  • Acetyl CoA and the Citric Acid Cycle

    • In addition, one complete turn of the cycle converts three equivalents of nicotinamide adenine dinucleotide (NAD+) into three equivalents of reduced NAD+ (NADH), one equivalent of ubiquinone (Q) into one equivalent of reduced ubiquinone (QH2), and one equivalent each of guanosine diphosphate (GDP) and inorganic phosphate (Pi) into one equivalent of guanosine triphosphate (GTP).
  • Electron Transport Chain

    • The compound connecting the first and second complexes to the third is ubiquinone (Q).
    • Once it is reduced to QH2, ubiquinone delivers its electrons to the next complex in the electron transport chain.
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