| Riboflavin synthase | Escherichia coli (strain K12) | Catalyzes the dismutation of two molecules of 6,7-dimethyl-8-ribityllumazine, resulting in the formation of riboflavi... more | 1 | Details |
| Ribokinase | Humans | Catalyzes the phosphorylation of ribose at O-5 in a reaction requiring ATP and magnesium. The resulting D-ribose-5-ph... more | 1 | Details |
| Ribokinase | Escherichia coli (strain K12) | Catalyzes the phosphorylation of ribose at O-5 in a reaction requiring ATP and magnesium. The resulting D-ribose-5-ph... more | 4 | Details |
| Ribonuclease | Bacillus pumilus | This is a purine-specific ribonuclease. | 2 | Details |
| Ribonuclease 3 | Humans | Ribonuclease III double-stranded (ds) RNA-specific endoribonuclease that is involved in the initial step of microRNA ... more | 1 | Details |
| Ribonuclease 4 | Humans | Cleaves preferentially after uridine bases. Has antimicrobial activity against uropathogenic E.coli (UPEC). Probably ... more | 1 | Details |
| Ribonuclease H | Bacillus halodurans (strain ATCC BAA-125 / DSM 18197 / FERM 7344 / JCM 9153 / C-125) | Endonuclease that specifically degrades the RNA of RNA-DNA hybrids. | 1 | Details |
| Ribonuclease P protein subunit p14 | Humans | Component of ribonuclease P, a ribonucleoprotein complex that generates mature tRNA molecules by cleaving their 5'-ends | 1 | Details |
| Ribonuclease P protein subunit p21 | Humans | Component of ribonuclease P, a ribonucleoprotein complex that generates mature tRNA molecules by cleaving their 5'-ends | 1 | Details |
| Ribonuclease pancreatic | Humans | Endonuclease that catalyzes the cleavage of RNA on the 3' side of pyrimidine nucleotides. Acts on single-stranded and... more | 27 | Details |
| Ribonuclease PH | Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228) | Phosphorolytic 3'-5' exoribonuclease that plays an important role in tRNA 3'-end maturation. Removes nucleotide resid... more | 1 | Details |
| Ribonuclease Z | Bacillus subtilis (strain 168) | Zinc phosphodiesterase, which displays some tRNA 3'-processing endonuclease activity. Probably involved in tRNA matur... more | 1 | Details |
| Ribonucleoside-diphosphate reductase 1 subunit beta | Escherichia coli (strain K12) | Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corr... more | 1 | Details |
| Ribonucleoside-diphosphate reductase 2 subunit alpha | Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720) | Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corr... more | 3 | Details |
| Ribonucleoside-diphosphate reductase large subunit | Humans | Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corr... more | 10 | Details |
| Ribonucleoside-diphosphate reductase subunit beta | Mycobacterium leprae (strain TN) | Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corr... more | 1 | Details |
| Ribonucleoside-diphosphate reductase subunit M2 | Humans | Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corr... more | 17 | Details |
| Ribonucleoside-diphosphate reductase subunit M2 B | Humans | Plays a pivotal role in cell survival by repairing damaged DNA in a p53/TP53-dependent manner. Supplies deoxyribonucl... more | 3 | Details |
| Ribose import binding protein RbsB | Escherichia coli (strain K12) | Part of the ABC transporter complex RbsABC involved in ribose import. Binds ribose. Also serves as the primary chemor... more | 2 | Details |
| Ribose-5-phosphate isomerase | Humans | Catalyzes the reversible conversion of ribose-5-phosphate to ribulose 5-phosphate and participates in the first step ... more | 1 | Details |
| Ribose-5-phosphate isomerase A | Shigella flexneri | Catalyzes the reversible conversion of ribose-5-phosphate to ribulose 5-phosphate. | 1 | Details |
| Ribose-5-phosphate isomerase A | Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd) | Catalyzes the reversible conversion of ribose-5-phosphate to ribulose 5-phosphate. | 1 | Details |
| Ribose-5-phosphate isomerase A | Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579) | Catalyzes the reversible conversion of ribose-5-phosphate to ribulose 5-phosphate. | 2 | Details |
| Ribose-5-phosphate isomerase B | Mycobacterium tuberculosis | Catalyzes the interconversion of ribulose-5-P and ribose-5-P. It has not isomerase activity towards D-allose 6-phosph... more | 2 | Details |
| ribose-phosphate diphosphokinase | Plasmodium falciparum (isolate 3D7) | Not Available | 1 | Details |