| deaminase | <enzyme> An enzyme which removes amino groups from compounds, producing ammonia in the process. (09 Oct 1997) |
|---|---|
| dsRNA adenosine deaminase | <enzyme> Catalyses the hydrolytic deamination of adenosine to form inosines; activity simulates double-stranded RNA unwinding; double-stranded RNA is preferred substrate Registry number: EC 3.5.4.- Synonym: double-stranded RNA-specific adenosine deaminase, dsrna-specific adenosine deaminase, red1 (enzyme), red2 (enzyme), adarb2 (26 Jun 1999) |
| threonine deaminase | <enzyme> A pyridoxal-phosphate protein that catalyses the deamination of threonine to 2-ketobutyrate and ammonia. The role of this enzyme can be biosynthetic or biodegradative. In the former role it supplies 2-ketobutyrate required for isoleucine biosynthesis, while in the latter it is only involved in the breakdown of threonine to supply energy. Chemical name: L-Threonine hydro-lyase (deaminating) Registry number: EC 4.2.1.16 (12 Dec 1998) |
| 2,5-diamino-6-ribitylamino-4(3H)-pyrimidinone 5'-phosphate deaminase | <enzyme> Forms 5-amino-6-ribitylamino-2,4-(1h,3h)-pyrimidinedione 5'-phosphate, intermediate in biosynthesis of riboflavin Registry number: EC 3.5.4.- Synonym: drap 5'-p deaminase (26 Jun 1999) |
| 3-aminobutyryl-CoA deaminase | <enzyme> Forms crotonyl CoA Registry number: EC 4.3.1.- Synonym: 3-aminobutyryl-coenzyme a deaminase (26 Jun 1999) |
| folic acid deaminase | <enzyme> Chemotaxis regulating enzyme; splits folic acid into 6-hydroxymethylpterin and p-aminobenzoylglutamic acid Registry number: EC 3.5.4.- Synonym: folic acid inactivating enzyme, folic acid c9-n10 cleaving enzyme (26 Jun 1999) |
| guanosine | <biochemistry, molecular biology> The nucleoside formed by linking ribose to guanine. (18 Nov 1997) |
| 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) |
| guanosine 5'-diphosphate | Guanosine esterified at its 5' position with diphosphoric acid; bound tightly in microtubules. Acronym: GDP (05 Mar 2000) |
| guanosine 5'-monophosphate | A major component of ribonucleic acids. Synonym: guanine ribonucleotide, guanosine 5'-monophosphate. Guanylic acid reductase (GMP reductase), an enzyme that catalyses the reaction of GMP with NADPH producing IMP, NH3, and NADP+; a part of the purine salvage pathway. Guanylic acid synthetase (GMP synthetase), an enzyme catalyzing the reaction of l-glutamine, XMP, and ATP to produce GMP, l-glutamate, AMP, and pyrophosphate; a key step in purine biosynthesis. Acronym: GMP (05 Mar 2000) |
| guanosine 5'-o-(3-thiotriphosphate) | <chemical> Guanosine 5'-(trihydrogen diphosphate), monoanhydride with phosphorothioic acid. A stable GTP analog which enjoys a variety of physiological actions such as stimulation of guanine nucleotide-binding proteins, phosphoinositide hydrolysis, cyclic AMP accumulation, and activation of specific proto-oncogenes. Chemical name: Guanosine 5'-(trihydrogen diphosphate), P'-anhydride with phosphorothioic acid (12 Dec 1998) |
| guanosine 5'-triphosphate | An immediate precursor of guanine nucleotides in RNA; similar to ATP; has a crucial role in microtubule formation. GTP cyclohydrolase, an enzyme that catalyses the reaction of GTP and H2O forming formate and a precursor of tetrahydrobiopterin; a deficiency of this enzyme will result in one form of malignant hyperphenylalaninaemia. Acronym: GTP (05 Mar 2000) |
| guanosine-5'-triphosphate, 3'-diphosphate pyrophosphatase | <enzyme> Catalyses the hydrolysis of guanosine 5'-triphosphate, 3'-diphosphate to yield guanosine 5'-diphosphate, 3'-diphosphate and orthophosphate; from E coli; also hydrolyzes other guanosine 5'-triphosphate derivatives with at least one unsubstituted phosphate group on the 3'-position, but not GTP, ATP or adenosine 5'-triphosphate, 3'-diphosphate Registry number: EC 3.6.1.40 Synonym: guanosine pentaphosphate phosphohydrolase, GTPdp pyrophosphatase, pppgpp 5'-phosphohydrolase, guanosine 5'-triphosphate-3'diphosphate 5'-phosphohydrolase, pppgpp-5'-phosphohydrolase, pppgpp-5'-phosphatase (26 Jun 1999) |
| guanosine 5'-triphosphate 3'-diphosphate pyrophosphorylase | <enzyme> Yields pyrophosphate + pppg Registry number: EC 2.7.7.- Synonym: pppgpp pyrophosphorylase (26 Jun 1999) |
| guanosine diphosphate | A molecule which consists of the nitrogenous base guanine linked to the sugar ribose and which has two phosphate groups attached to the 5th carbom atom of the ribose. It is a derivative of the ribonucleotide GMP. (09 Oct 1997) |