caffeic acid
| tocopherol cyclase | <enzyme> Catalyses cyclization of phytyl-hydroquinone to gamma-tocopherol; isolated from the blue-green alga anabaena variabilis Registry number: EC 5.4.99.- (26 Jun 1999) |
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| endo-fenchol cyclase | <enzyme> Converts geranyl pyrophosphate to (-)-endo-fenchol via (-)-(3r)-linoyl pyrophosphate Registry number: EC 5.5.- (26 Jun 1999) |
| epinephrine cyclase | <enzyme> Epinephrine is converted to adrenochrome Registry number: EC 1.10.3.- Synonym: catecholamine cyclase (26 Jun 1999) |
| farnesylpyrophosphate cyclase | <enzyme> Converts farnesylpyrophosphate to pentalenene; consider also trichodiene synthetase Registry number: EC 5.5.- Synonym: fpp cyclase, pentalenene synthase (26 Jun 1999) |
| 3-carboxy-cis-cis-muconate cyclase | <enzyme> Do not confuse with muconate cycloisomerase Registry number: EC 5.5.1.5 Synonym: 3-carboxy-cis,cis-muconate lactonizing enzyme, 3-cmle, carboxy-cis,cis-muconate cyclase (26 Jun 1999) |
| lycopene cyclase-isomerase | <enzyme> Found in bacteria chloroplasts; both isomerization and cyclization takes place; NADPH is essential cofactor; may be route to formation of alpha and beta carotene; has been sequenced; genbank d83513 Registry number: EC 5.5.- Synonym: crty protein, lycopene cyclase, crtl gene product, lycopene beta-cyclase (26 Jun 1999) |
| active methyl | A methyl group attached to a quaternary ammonium ion or a tertiary sulfonium ion that can take part in transmethylation reactions; e.g., methyl groups in choline and in S-adenosyl-l-methionine, which are thus methyl donors. (05 Mar 2000) |
| alpha-(4-O-methyl)-D-glucuronidase | <enzyme> Removes 4-o-methyl-glucopyranosyl uronic acid residues from the 2-position of fungal cell wall xylans Registry number: EC 3.2.1.- Synonym: 4-o-methyl-glucuronidase (26 Jun 1999) |
| alpha methyl dopa | <drug> An antihypertensive drug, preferred in pregnant patients. (18 Nov 1997) |
| angular methyl | A methyl group attached to carbon 10 (between rings A and B) or to carbon 13 (between rings C and D) of the steroid nucleus. (05 Mar 2000) |
| bevonium methyl sulfate | 2-(hydroxymethyl)-1,1-dimethylpiperidinium methyl sulfate benzylate;an anticholinergic agent. Synonym: pyribenzyl methyl sulfate. (05 Mar 2000) |
| Mann's methyl blue-eosin stain | <technique> A stain useful for anterior pituitary and viral inclusion bodies; a mixture of the two dyes stains alpha cell granules red, beta cell granules dark blue, chromophobes gray to pink, colloid red, erythrocytes orange-red, and collagen fibres blue; this method is also useful for enterochromaffin, goblet, Paneth, and pancreatic islet cells; Negri bodies appear red while their nuclei and central granules are blue. (05 Mar 2000) |
| receptors, n-methyl-d-aspartate | A class of ionotropic glutamate receptors characterised by affinity for n-methyl-d-aspartate. Nmda receptors have an allosteric binding site for glycine which must be occupied for the channel to open efficiently and a site within the channel itself to which magnesium ions bind in a voltage-dependent manner. The positive voltage dependence of channel conductance and the high permeability of the conducting channel to calcium ions (as well as to monovalent cations) are important in excitotoxicity and neuronal plasticity. (12 Dec 1998) |
| methyl | <chemistry> Specific reference to the methyl group is made when macromolecules are modified after synthesis by enzymic addition of methyl groups. The group is transferred to nucleic acids and proteins. See: methyl transferase and DNA methylation. (18 Nov 1997) |
| methyl accepting chemotaxis protein | Methyl accepting chemotaxis proteins. Proteins of the inner cytoplasmic face of the bacterial plasma membane with which the receptors of the outer face interact. Four different MCPs are known in E. Coli, each with a separate set of receptors. Can be methylated at various sites, methylation is part of the adaptation to the signal. Although important intermediate signal integration sites, they are not directly connected to the motor. (18 Nov 1997) |