| methenyl | <chemistry> The hypothetical hydrocarbon radical CH, regarded as an essential residue of certain organic compounds. Source: Websters Dictionary (01 Mar 1998) |
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| methenyltetrahydromethanopterin cyclohydrolase | <enzyme> From methanobacterium thermoautotrophicum; catalyses the energy-independent hydrolysis of 5,10-methenyl-5,6,7,8-tetrahydromethanopterin to 5-formyl-h4mpt Registry number: EC 3.5.4.27 Synonym: 5,10-methenyl-h4mpt cyclohydrolase, 5,10-mh4mpt cyclohydrolase, 5,10-methenyltetrahydromethanopterin cylohydrolase (26 Jun 1999) |
| formyl-methenyl-methylenetetrahydrofolate synthetase | <chemical> Trifunctional enzyme which contains EC 6.3.4.3, formyltetrahydrofolate synthetase, plus EC 3.5.4.9, methenyltetrahydrofolate cyclohydrolase, and EC 1.5.1.5, methylenetetrahydrofolate dehydrogenase as a complex in sheep liver Chemical name: synthetase, formyl-methenyl-methylenetetrahydrofolate Synonym: c1-thf synthase, c1-tetrahydrofolate synthase, formyl-methenyl-methylenetetrahydrofolate synthetase (combined), c-1-tetrahydrofolate synthetase, nadp-dependent methylenetetrahydrofolate dehydrogenase-cyclohydrolase-synthetase (26 Jun 1999) |
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