5,10-Methenyltetrahydrofolate (5,10-CH=THF) is a form of tetrahydrofolate that is an intermediate in metabolism. 5,10-CH=THF is a coenzyme that accepts and donates methenyl (CH=) groups.
It is produced from 5,10-methylenetetrahydrofolate by either a NAD+ dependent methylenetetrahydrofolate dehydrogenase, or a NADP+ dependent dehydrogenase.[1] It can also be produced as an intermediate in histidine catabolism, by formiminotransferase cyclodeaminase, from 5-formiminotetrahydrofolate.
5,10-CH=THF is a substrate for methenyltetrahydrofolate cyclohydrolase, which converts it into 10-formyltetrahydrofolate.
Interactive pathway map
Click on genes, proteins and metabolites below to link to respective articles.[§ 1]
Fluorouracil (5-FU) Activity edit
- ^ The interactive pathway map can be edited at WikiPathways: "FluoropyrimidineActivity_WP1601".
References
- ^ Fowler B (February 2001). "The folate cycle and disease in humans". Kidney Int. Suppl. 78: S221–9. doi:10.1046/j.1523-1755.2001.07851.x. PMID 11169015.
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