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Accepted name: formimidoyltetrahydrofolate cyclodeaminase
Reaction: 5-formimidoyltetrahydrofolate = 5,10-methenyltetrahydrofolate + NH
For diagram of folate-coenzyme interconversions,
click here and for diagram of C metabolism, 1 click here
Other name(s): formiminotetrahydrofolate cyclodeaminase; 5-formimidoyltetrahydrofolate ammonia-lyase (cyclizing)
Systematic name: 5-formimidoyltetrahydrofolate ammonia-lyase (cyclizing; 5,10-methenyltetrahydrofolate-forming)
Comments: In eukaroytes, occurs as a bifunctional enzyme that also has glutamate formimidoyltransferase (
EC 22.214.171.124) activity.
Links to other databases:
BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 9032-05-7
Rabinowitz, J.C. and Pricer, W.E. Formiminotetrahydrofolic acid and methenyltetrahydrofolic acid as intermediates in the formation of
N -formyltetrahydrofolic acid. 10 J. Am. Chem. Soc. 78 (1956) 5702–5704.
[EC 126.96.36.199 created 1961, modified 2000]
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