| 1,2,3-propanetriol | <biochemistry> A metabolic intermediate, but primarily of interest as the central structural component of the major classes of biological lipids, triglycerides and phosphatidyl phospholipids. Also used as a cryoprotectant. (18 Nov 1997) |
|---|---|
| 1,2-diacylglycerol 3-glucosyltransferase | <enzyme> Catalyses the transfer of glucose from udp glucose to diacylglycerol (dag) to yield monoglucosyldiacylglycerol (mglcdag) and udp Registry number: EC 2.4.1.157 Synonym: udpg dag glucosyltransferase, udp-glucose 1,2-diacylglycerol 3-glucosyltransferase (26 Jun 1999) |
| 1,2-dimethylhydrazine | <chemical> A DNA alkylating agent that has been shown to be a potent carcinogen and is widely used to induce colon tumours in experimental animals. Pharmacological action: alkylating agents, carcinogens, mutagens. (12 Dec 1998) |
| 1,2-dipalmitoylphosphatidylcholine | <chemical> Synthetic phospholipid used in liposomes and lipid bilayers to study biological membranes. It is also a major constituent of pulmonary surfactants. Chemical name: 3,5,9-Trioxa-4-phosphapentacosan-1-aminium, 4-hydroxy-N,N,N-trimethyl-10-oxo-7-((1-oxohexadecyl)oxy)-, inner salt, 4-oxide (12 Dec 1998) |
| 1,25-dihydroxyergocalciferol | A biologically active metabolite of vitamin D2. Synonym: ercalcitriol. (05 Mar 2000) |
| 1,3-beta-glucan synthase | <enzyme> Amino acid sequence given in second source; genbank u09275 Registry number: EC 2.4.1.34 Synonym: chrysolaminarin synthase, udp glucuose beta(1--3)glucan-beta-3-glucosyltransferase, callose synthase, glucan synthase 1 gene product (26 Jun 1999) |
| 1,3-diphosphoglycerate | An intermediate in glycolysis which enzymatically reacts with ADP to generate ATP and 3-phosphoglycerate. (05 Mar 2000) |
| 1,3-P2Gri | Symbol for 1,3-diphosphoglycerate. (05 Mar 2000) |
| 1,3-propanediol dehydrogenase | <enzyme> From klebsiella pneumoniae; catalyses the oxidation of 1,3-propanediol to 3-hydroxypropanal in the presence of nad+ Registry number: EC 1.1.1.202 Synonym: 1,3-propanediol-nad+ oxidoreductase (26 Jun 1999) |
| 1,4-alpha-d | -glucan branching enzyme Amylo-(1,4→1,6)-transglucosylase or transglucosidase;an enzyme in muscle and in plants (Q enzyme) that cleaves alpha-1,4 linkages in glycogen or starch, transferring the fragments into alpha-1,6 linkages, creating branches in the polysaccharide molecules; in plants, it converts amylose to amylopectin; this enzyme is deficient in individuals with glycogen storage disease type IV. Synonym: alpha-glucan branching glycosyltransferase, amylo-1,4:1,6-glucantransferase, amylo-(1,4→1,6)-transglucosidase, amylo-(1,4→1,6)-transglucosylase, branching enzyme. (05 Mar 2000) |
| 1,4-alpha-d-glucan 6-alpha-d-glucosyltransferase | A glucosyltransferase that transfers an alpha-glucosyl residue in a 1,4-alpha-glucan to the primary hydroxyl group of glucose in a 1,4-alpha-glucan. See: 1,4-alpha-d-glucan branching enzyme. Synonym: oligoglucan-branching glycosyltransferase. (05 Mar 2000) |
| 1,4-alpha-glucan 6-alpha-glucosyltransferase | <enzyme> From aspergillus niger and oryzae Registry number: EC 2.4.1.24 (26 Jun 1999) |
| 1,4-alpha-glucan branching enzyme | <enzyme> In glycogen or amylopectin synthesis, the enzyme that catalyses the transfer of a segment of a 1,4-alpha-glucan chain to a primary hydroxy group in a similar glucan chain. Chemical name: 1,4-alpha-D-Glucan:1,4-alpha-D-glucan 6-alpha-D-(1,4-alpha-D-glucano)-transferase Registry number: EC 2.4.1.18 (12 Dec 1998) |
| 1,4-benzoquinone | 1. 2,5-cyclohexadiene-1,4-dione;an essential part of coenzyme Q and vitamin E, reducible to hydroquinone. Synonym: quinone. 2. One of a class of benzoquinone derivatives. (05 Mar 2000) |
| 1,4-benzoquinone reductase | <enzyme> From wood-rotting basidiomycete phanerochaete chrysosporium; involved in the reduction of lignin-derived methoxylated quinones Registry number: EC 1.6.99.- (26 Jun 1999) |