| Rib | riboflavin; ribose |
|---|---|
| RP | radial pulse; radiopharmaceutical; rapid processing [of film]; Raynaud phenomenon; reactive protein;... |
| R5P | ribose-5-phosphate |
| RPI | regional perfusion index; relative percentage index; reticulocyte production index, ribose 5-phospha... |
| RSP | removable silicone plug; ribose-5-phosphatase; right sacroposterior [fetal position] |
| nitrogenous group transferases | <enzyme> Enzymes that catalyze the transfer of nitrogenous groups, primarily amino groups, from a donor, generally an amino acid, to an acceptor, usually a 2-oxoacid. Registry number: EC 2.6 (12 Dec 1998) |
|---|---|
| sulfur group transferases | <enzyme> Enzymes that catalyze the transfer of sulfur atoms (2.8.1), sulfur groups (2.8.2) or coenzyme a (2.8.3). Registry number: EC 2.8 (12 Dec 1998) |
| intramolecular transferases | <enzyme> Enzymes of the isomerase class that catalyze the transfer of acyl-, phospho-, amino- or other groups from one position within a molecule to another. Registry number: EC 5.4 (12 Dec 1998) |
| one-carbon group transferases | <enzyme> A subclass of transferases that transfer chemical groups containing a single carbon. These include the methyltransferases, the hydroxymethyl and formyl transferases, the carboxyl and carbamoyl transferases, and the amidinotransferases. Registry number: EC 2.1 (12 Dec 1998) |
| terminal transferases | Enzymes that covalently add nucleotides to the 3' end of polynucleic acids; e.g., DNA nucleotidylexotransferase. (05 Mar 2000) |
| transferases | <enzyme> Transferases are enzymes transferring a group, for example, the methyl group or a glycosyl group, from one compound (generally regarded as donor) to another compound (generally regarded as acceptor). The classification is based on the scheme "donor:acceptor group transferase". Registry number: EC 2. (12 Dec 1998) |
| transferases (other substituted phosphate groups) | <enzyme> A class of enzymes that transfers substituted phosphate groups. Registry number: EC 2.7.8 (12 Dec 1998) |
| adenosine diphosphate ribose | <chemical> Adenosine 5'-(trihydrogen diphosphate),5'-5-ester with d-ribose. An ester formed between the aldehydic carbon of ribose and the terminal phosphate of adenosine diphosphate. Serves as a ribose carrier. Chemical name: Adenosine 5'-(trihydrogen diphosphate), P'-5-ester with D-ribose (12 Dec 1998) |
| adenosine diphosphate ribose cyclase | <enzyme> Catalyses conversion of nadp to 2'-phospho-cyclic adenosine diphosphoribose; do not use for formation of cyclic adpribose (see ADP-ribosyl cyclase) Registry number: EC 4.6.- Synonym: 2'-p-adpr cyclase (26 Jun 1999) |
| ribose | A monosaccharide pentose of widespread occurrence in biological molecules, for example RNA. (18 Nov 1997) |
| ribose-1,5-diphosphate synthase | <enzyme> Uses ribose 1-(or 5)p as phosphoryl acceptor and acyl-p of 3-phosphoglyceroylphosphate as phosphoryl donor; similar reaction to glucose 1,6-bisphosphate synthase Registry number: EC 2.7.1.- Synonym: ribose-1,5-p2 synthase (26 Jun 1999) |
| ribose-5-phosphate | Ribose phosphorylated on carbon-5; an intermediate in the pentose phosphate pathway. (05 Mar 2000) |
| ribose-5-phosphate isomerase | <enzyme> An enzyme catalyzing interconversion of d-ribose 5-phosphate and d-ribulose 5-phosphate; of importance in ribose metabolism and in the pentose phosphate pathway. Synonym: phosphopentose isomerase, phosphoriboisomerase. (05 Mar 2000) |
| ribose binding protein | <protein> Periplasmic binding proteins of bacteria that interact either with the ribose transport system or with the methyl accepting chemotaxis protein MCP III (trg). (18 Nov 1997) |
| ribose-phosphate pyrophosphokinase | <enzyme> An enzyme that catalyses the formation of phosphoribosyl pyrophosphate from ATP and ribose-5-phosphate. Chemical name: ATP:ribose-5-phosphate pyrophosphotransferase Registry number: EC 2.7.6.1 (12 Dec 1998) |