Multiple choice

Which pair of metalloenzymes does not contain cobalt?

  1. Isobutyryl - CoA mutase

  2. Methylmalonyl - CoA mutase

  3. Methionyl aminopeptidase

  4. Nitrile hydratase

  5. Cytochrome oxidase
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Cytochrome oxidase metalloenzyme contains copper. Cytochrome oxidase is a metalloenzyme containing copper and a porphyrin, found in mitochondria and important in cell respiration as an agent of electron transfer from certain cytochrome molecules to oxygen molecules.

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