What Is the Initial Step in the Mechanism of Fructose-1,6-Bisphosphate

question 16

Multiple Choice

What is the initial step in the mechanism of fructose-1,6-bisphosphate aldolase when the substrate is fructose-1,6-bisphosphate in its open-chain form?

• A)attack of C-2 carbonyl group by the amine of lysine
• B)deprotonation of C-3 hydroxyl by aspartate
• C)protonation of C-2 carbonyl oxygen by histidine
• D)attack of C-2 carbonyl group by the thiol of cysteine
• E)none of the above

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