Multiple choice

Several drugs and toxins inhibit oxidative phosphorylation. Even if a single enzyme is inhibited, the whole process comes to a halt. One such inhibitor is oligomycin, which is used as an antibiotic. It blocks which of the following enzymes?

  1. ATP synthase

  2. Cytochrome c oxidase

  3. Succinate dehydrogenase (complex II)

  4. Cytochrome c reductase

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Oligomycin inhibits ATP synthase by blocking the flow of protons through the Fo subunit of mitochondria.