| 9-beta-d-ribofuranosyladenine | <biochemistry> A ribonucleotide which consists of the nitrogenous base adenine linked to the sugar ribose. <drug> A cardiac drug used in terminating PSVT involving reentry pathways that include the AV node or Wolff-Parkinson-White syndrome. For atrial flutter, atrial fibrillation, atrial or ventricular tachycardias, adenosine may produce transient AV block that may help identify the rhythm. Pharmacologic action: Endogenous purine nucleoside that depresses AV node and sinus node activity. Brief duration of action (1-2 min). Dose: Rapid 6 mg IV bolus over 1-3 sec. May repeat at 12 mg IV bolus within 1-2 min Patients taking theophylline may require larger doses. Use a smaller dose with cardiac transplant patients. Potential complications: Common but transient - flushing, dyspnea, chest pain, bradycardia, and ventricular ectopy. Theophylline (and caffeine) blocks adenosine's effects. Dipyridamole potentiates adenosine's effects. Use other agents to avoid these drug interactions. (15 Mar 2000) |
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| 9-beta-d-ribofuranosylguanine | <biochemistry, molecular biology> The nucleoside formed by linking ribose to guanine. (18 Nov 1997) |
| 9-beta-ribofuranosylpurine | A toxic nucleoside isolated from the mushroom Agaricus nebularis and from Streptomyces sp. Synonym: 9-beta-ribofuranosylpurine, purine ribonucleoside, ribosylpurine. (05 Mar 2000) |
| furostanol glycoside 26-O-beta-glucosidase | <enzyme> From costus speciosus rhizomes; specifically cleaves the c-26-bound glucose moiety of furostanol glycosides Registry number: EC 3.2.1.- Synonym: f26g enzyme (26 Jun 1999) |
| leucyl-beta-naphthylamidase | <enzyme> Frequently used to test for leucine aminopeptidase (ec 3.4.11.1) activity; hydrolyzes naphthylamides of leucine. Registry number: EC 3.4.11.- (12 Dec 1998) |
| lignostilbene-alpha,beta-dioxygenase | <enzyme> Responsible for the cleavage of interphenyl calpha-cbeta double bonds of lignostilbene Registry number: EC 1.13.11.- Synonym: lig-dioxygenase (26 Jun 1999) |
| lithocholic acid 6 beta-hydroxylase | <enzyme> Converts lithocholic acid to murideoxycholic acid, uses NADPH Registry number: EC 1.14.13.- Synonym: cyp 3a10 (26 Jun 1999) |