inositol-3-phosphate synthase activity [GO_0004512]

Catalysis of the reaction: D-glucose 6-phosphate = 1D-myo-inositol 3-phosphate. This reaction requires NAD, which dehydrogenates the CHOH group to CO at C-5 of the glucose 6-phosphate, making C-6 into an active methylene, able to condense with the aldehyde at C-1. Finally, the enzyme-bound NADH reconverts C-5 into the CHOH form.

inositol-3-phosphate synthase activity

ID: GO_0004512

Class

Catalysis of the reaction: D-glucose 6-phosphate = 1D-myo-inositol 3-phosphate. This reaction requires NAD, which dehydrogenates the CHOH group to CO at C-5 of the glucose 6-phosphate, making C-6 into an active methylene, able to condense with the aldehyde at C-1. Finally, the enzyme-bound NADH reconverts C-5 into the CHOH form.

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Classification

Alternative Names

Synonym Scope Reference
D-glucose 6-phosphate cycloaldolase activity related synonym 5.5.1.4
glucose-6-phosphate inositol monophosphate cycloaldolase activity related synonym 5.5.1.4
1L-myo-inositol-1-phosphate lyase (isomerizing) related synonym 5.5.1.4
glucocycloaldolase activity related synonym 5.5.1.4
inositol 1-phosphate synthatase activity related synonym 5.5.1.4
inositol 1-phosphate synthetase activity related synonym 5.5.1.4
glucose 6-phosphate cyclase activity related synonym 5.5.1.4

References