There are two kinds of aldolases. Class I aldolases are found in animals and plants, whereas class II aldolases are found in fungi, algae, and some bacteria. Only class I aldolases form an imine. Class II aldolases have a metal ion (Zn2+) at the active site. Propose a mechanism for catalysis by class II aldolases.

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There are two kinds of aldolases. Class I aldolases are found in animals and plants, whereas class II aldolases are found in fungi, algae, and some bacteria. Only class I aldolases form an imine. Class II aldolases have a metal ion (Zn2+) at the active site. Propose a mechanism for catalysis by class II aldolases.

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Aldolases are often used to convert fructose 1,6-biphosphate into dihydroxyacetone phosphate and glyceraldehyde-3-phosphate . A phenolate anion abstracts a proton from fructose and sets off electron flow that leads to products .

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