Nitrite Reductase Contains Two Histidine Amino Acids That Coordinate a Cu²⁺

question 97

Multiple Choice

Nitrite reductase contains two histidine amino acids that coordinate a Cu²⁺ ion.When the ion is present in the enzyme,the ion is a __________ and the enzyme is a __________.

• A) cofactor; apoenzyme
• B) cofactor; holoenzyme
• C) coenzyme; apoenzyme
• D) coenzyme; holoenzyme

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