Information on EC 3.5.4.9 - methenyltetrahydrofolate cyclohydrolase

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IUBMB Comments
In eukaryotes, the enzyme occurs as a trifunctional enzyme that also has methylenetetrahydrofolate dehydrogenase (NADP+) (EC 1.5.1.5) and formate---tetrahydrofolate ligase (EC 6.3.4.3) activity. In some prokaryotes, it occurs as a bifunctional enzyme that also has dehydrogenase (EC 1.5.1.5) activity or formimidoyltetrahydrofolate cyclodeaminase (EC 4.3.1.4) activity.
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The enzyme appears in viruses and cellular organisms
Synonyms
5,10-CH+-H4PteGlu cyclohydrolase, 5,10-CH+-THF cyclohydrolase, 5,10-CH=H4 folate synthetase, 5,10-methenyl-H4folate cyclohydrolase, 5,10-methenyl-THF cyclohydrolase, 5,10-methenyltetrahydrofolate cyclohydrolase, 5,10-methenyltetrahydrofolate cyclohydrolase/5,10-methylene tetrahydrofolate dehydrogenase, 5,10-Methenyltetrahydrofolate synthetase, 5,10-methylenetetrahydrofolate dehydrogenase/cyclohydrolase, ADE3, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
5,10-methenyltetrahydrofolate + H2O = 10-formyltetrahydrofolate
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