| Question 1: The active site, which is believed to be the place where catalysis takes place, is also a metallocluster, and each metal is coordinated by ________ (CO) and cyanide (CN-) ligands. | |||
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| Question 2: A hydrogenase is an ________ that catalyses the reversible oxidation of molecular hydrogen (H2). | |||
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| Question 3: Both low-molecular weight compounds and proteins such as ________, cytochrome c3, and cytochrome c6 can act as physiological electron donors (D) or acceptors (A) for hydrogenases:[3] | |||
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