| cyclase | Descriptive name applied to an enzyme that forms a cyclic compound; e.g., adenylate cyclase. (05 Mar 2000) |
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| abietadiene cyclase | <enzyme> Converts geranylgeranyl pyrophosphate to (-)-abieta-7(8),13(14)-diene; from lodgepole pine or grand fir Registry number: EC 5.- Synonym: abietadiene synthase (26 Jun 1999) |
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| adenosine diphosphate ribose cyclase | <enzyme> Catalyses conversion of nadp to 2'-phospho-cyclic adenosine diphosphoribose; do not use for formation of cyclic adpribose (see ADP-ribosyl cyclase) Registry number: EC 4.6.- Synonym: 2'-p-adpr cyclase (26 Jun 1999) |
| adenylate cyclase | <enzyme> Enzyme responsible for the ATP. (06 May 1997) |
| adenyl cyclase | <enzyme> An enzyme that converts adenosine monophosphate to cyclic adenosine monophosphate, an intracellular second messenger of neural or hormonal activation. (05 Mar 2000) |
| adenylyl cyclase | The former name for adenylate cyclase. (05 Mar 2000) |
| aklanonic acid methyl ester cyclase | <enzyme> Catalyses the formation of aklaviketone from aklanonic acid methyl ester; involved in daunomycin biosynthesis; see also daunorubicin-doxorubicin polyketide synthase Registry number: EC 5.- Synonym: aame cyclase, daud protein, daud gene product, dnrd protein, dnrd gene product (26 Jun 1999) |
| magnesium protoporphyrin monomethyl ester oxidative cyclase | <enzyme> In chlorophyll biosynthesis converts -(ch2)2-coo-ch3 side chain of mg protoporphyrin monomethyl ester to -c=o-ch-cooch3 ring of mg 2,4-divinyl phaeoporphyrin a(5) monomethyl ester; requires NADPH and molecular oxygen; similar to cytochrome p-450 catalyzed systems but not inhibited by co Registry number: EC 1.14.13.- Synonym: mpme-oxidative cyclase (26 Jun 1999) |
| GDP-ribosyl cyclase | <enzyme> Catalyses the conversion of ngd+ (the guanine analog of nad) to cyclic GDP-ribose Registry number: EC 3.2.2.- (26 Jun 1999) |
| mannopine cyclase | <enzyme> Catalyses the conversion of mannopine to agropine Registry number: EC 5.- (26 Jun 1999) |
| geranyl pyrophosphate-sabinene hydrate cyclase | <enzyme> Enzyme from sweet marjoram; catalyses cation-dependent cyclization of geranyl pyrophosphate to cis and trans sabinene hydrate, deriving oh from water, not from the pyrophosphate ester Registry number: EC 5.5.- Synonym: sabinene hydrate cyclase, sabinene hydrate synthase (26 Jun 1999) |
| versiconal cyclase | <enzyme> From aspergillus parasiticus; catalyses the dehydration of versiconal to versicolorin b or c Registry number: EC 4.2.1.- (26 Jun 1999) |
| caryophyllene cyclase | <enzyme> Catalyses the cyclization of farnesyl pyrophosphate, probably by intramolecular electrophilic attack by c-1 bearing the pyrophosphate ester on c-11 of the terminal double bond to give a humulyl cation, which undergoes closure to a cyclobutyl intermediate and deprotonation at c-3 methyl to form (-) caryophyllene; mw 57 kD Registry number: EC 5.- (26 Jun 1999) |
| glutamine amidotransferase cyclase | <chemical> Possesses glutamine amidotransferase and cyclase activities; his7 isolated from saccharomyces cerevisiae catalyses the fifth and sixth steps of histidine biosynthesis. Synonym: his7 gene product (26 Jun 1999) |
| chanoclavin-I-cyclase | <enzyme> Converts chanoclavin I to agraclavin Registry number: EC 3.5.- (26 Jun 1999) |
| RNA 3'-terminal phosphate cyclase | <enzyme> ATP dependent; forms 2',3' terminal cyclic phosphate on RNA which is then the substrate for RNA ligase of hela cells Registry number: EC 6.5.- Synonym: RNA tph cyclase (26 Jun 1999) |