In the Mechanism of Rubisco, What Role Does the Mg²⁺ $\beta$

question 5

Multiple Choice

In the mechanism of Rubisco, what role does the Mg²⁺ play?

• A)neutralizes negative charges of active site Asp and Glu, enabling ionization of CO₂
• B)activates water molecule that hydrates the carboxy-\(\beta\)-keto intermediate
• C)complexes with the phosphate on C-1 to hold ribulose-1,5-bisphosphate in the active site
• D)repels the product, 3-phosphoglycerate, allowing it to leave the active site more rapidly
• E)none of the above

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