| bis- | 1. Prefix signifying two or twice. 2. In chemistry, used to denote, the presence of two identical but separated complex groups in one molecule. Compare: bi-, di-. Origin: L. (05 Mar 2000) |
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| bis(2-ethylhexyl)phthalate esterase | <enzyme> Catalyses cleavage of the mass produced plasticiser, dehp Registry number: EC 3.1.1.- Synonym: dehp esterase (26 Jun 1999) |
| bis(chloromethyl) ether | <chemical> Sym-dlchloromethyl ether. A substance that is an irritant to the eyes and respiratory tract and may be carcinogenic. Pharmacological action: carcinogens, irritants. Chemical name: Methane, oxybis(chloro- (12 Dec 1998) |
| bis-gamma-glutamylcystine reductase | <enzyme> From halobacterium halobium; specific for NADPH Registry number: EC 1.6.4.- Synonym: bis-ggc reductase (26 Jun 1999) |
| bis in die | Twice a day. Origin: L. (05 Mar 2000) |
| bis(monoacylglycero)phosphate synthetase | <enzyme> Converts phosphatidylglycerol, 1-acyl- or 2-acyllysophosphatidylglycerol to bis(monoacylglycero)phosphate Registry number: EC 2.3.1.- (26 Jun 1999) |
| guanosine-3',5'-bis(diphosphate) 3'-pyrophosphatase | <enzyme> Catalyses breakdown of guanosine tetraphosphate into guanosine diphosphate and pyrophosphate; spot protein is isolated from e. Coli Registry number: EC 3.1.7.2 Synonym: ppgpp-3'-pyrophosphohydrolase, guanosine tetraphosphate-3'-pyrophosphohydrolase, spot protein, spot gene product, ppgpp pyrophosphorylase, ppgppase, guanosine-5'-diphosphate 3'-diphosphate pyrophosphorylase (26 Jun 1999) |
| 1,4-bis(5-phenyloxazol-2-yl)benzene | A liquid scintillation agent used in radioisotope measurement. (05 Mar 2000) |
| 2,2-bis(4-chlorophenyl)acetate O-glucosyltransferase | <enzyme> Catalyses the metabolism of dda, the carboxylic acid of the insecticide ddt, to its acylglucoside; mw approx 50 kD; isoelectric point 4.9 Registry number: EC 2.4.1.- Synonym: soybean o-glucosyltransferase, dda glucosyltransferase, dda-acylglucoside synthase (26 Jun 1999) |
| 2,5-bis(5-t-butylbenzoxazol-2-yl)thiophene | A scintillator used in radioactivity measurements by scintillation counting. Acronym: BBOT (05 Mar 2000) |