| urateribonucleotide phosphorylase | A ribosyltransferase that reacts urate d-ribonucleotide with orthophosphate to produce urate plus d-ribose 1-phosphate. (05 Mar 2000) |
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| uridine phosphorylase | <enzyme> An enzyme that catalyses the transfer of ribose from uridine to orthophosphate, forming uracil and ribose 1-phosphate. Chemical name: Uridine:orthophosphate alpha-D-ribosyltransferase Registry number: EC 2.4.2.3 (12 Dec 1998) |
| 100RNP-polynucleotide phosphorylase | <enzyme> A chloroplast exoribonuclease that degrades polyadenylated RNA much faster than non-polyadenylated RNA Registry number: EC 3.1.13.- Synonym: 100rnp-pnpase (26 Jun 1999) |
| 5'-methylthioadenosine phosphorylase | <enzyme> Methylthioadenosine to methylthioribose-1-phosphate and adenine in the presence of orthophosphate Registry number: EC 2.4.2.28 Synonym: methylthioadenosine nucleosidase, methylthioadenosine phosphorylase, 5'-deoxy-5'-methylthioadenosine phosphorylase (26 Jun 1999) |
| laminaribiose phosphorylase | <enzyme> From euglena gracillis z; contains three isoforms; catalyses a reversible phosphorolysis of laminaribiose; also acts on 1,3-beta-d-oligoglucans Registry number: EC 2.4.1.31 (26 Jun 1999) |