Glycine formimidoyltransferase (EC 2.1.2.4) is an enzyme that catalyzes the chemical reaction
This tetrahydrofolate–dependent enzyme catalyzes a nucleophilic acyl substitution of the formimino group from the cofactor 5-formiminotetrahydrofolate to glycine, giving N-formimidoylglycine, with tetrahydrofolate (THF) as a byproduct. The enzyme can act in reverse to produce 5-formiminotetrahydrofolate. This enzyme belongs to the family of transferases that transfer one-carbon groups, specifically the hydroxymethyl-, formyl- and related transferases. The systematic name of this enzyme class is 5-formimidoyltetrahydrofolate:glycine N-formimidoyltransferase. Other names in common use include formiminoglycine formiminotransferase, FIG formiminotransferase, and glycine formiminotransferase. This enzyme participates in purine metabolism.
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