| Regulating synaptic membrane exocytosis protein 1 (Fragment) | Rims1 | E9PWP6 | 1 |
| Regulation of nuclear pre-mRNA domain-containing protein 1A (Cyclin-dependent kinase inhibitor 2B-related protein) (p15INK4B-related protein) | Rprd1a Kiaa4077 P15rs | Q8VDS4 | 1 |
| Regulation of nuclear pre-mRNA domain-containing protein 1B (Fragment) | Rprd1b | F6YB25 | 1 |
| Regulation of nuclear pre-mRNA domain-containing protein 1B (Fragment) | Rprd1b | F7DAY5 | 1 |
| Regulator of G-protein signaling 4 (RGS4) | Rgs4 | O08899 | 1 |
| Regulator of G-protein signaling 7-binding protein (R7 family-binding protein) | Rgs7bp D13Bwg1146e R7bp | Q8BQP9 | 1 |
| Regulator of G-protein-signaling 19 | Rgs19 | B7ZCT1 | 1 |
| Regulator of microtubule dynamics protein 3 (RMD-3) (mRMD-3) (Protein FAM82A2) (Protein FAM82C) | Rmdn3 Fam82a2 Fam82c | Q3UJU9 | 1 |
| Regulatory factor X, 7 | Rfx7 | F8VPJ6 | 1 |
| Remodeling and spacing factor 1 | Rsf1 | E9PWW9 | 1 |
| Replication factor C 1, isoform CRA_c (Replication factor C subunit 1) | Rfc1 Recc1 mCG_10254 | G3X8Z6 | 1 |
| Replication factor C subunit 1 | Rfc1 | G3UWX1 | 1 |
| Replication factor C subunit 1 (Rfc1 protein) | Rfc1 | G3UXL4 | 1 |
| Replication factor C subunit 1 (Rfc1 protein) | Rfc1 | Q5U4B1 | 1 |
| Repulsive guidance molecule A (RGM domain family member A) | Rgma | Q6PCX7 | 1 |
| REST corepressor 1 (Protein CoREST) | Rcor1 D12Wsu95e Kiaa0071 | K3W4P9 | 1 |
| REST corepressor 3 | Rcor3 | Q6PGA0 | 1 |
| Reticulocalbin-3 | Rcn3 D7Ertd671e | Q8BH97 | 1 |
| Reticulon-2 (Neuroendocrine-specific protein-like 1) (NSP-like protein 1) (Neuroendocrine-specific protein-like I) (NSP-like protein I) (NSPLI) | Rtn2 Nspl1 | O70622 | 1 |
| Reticulon-4 receptor (Nogo receptor) (NgR) (Nogo-66 receptor) (Nogo66 receptor-1) (NgR1) | Rtn4r Ngr1 Nogor | Q99PI8 | 1 |
| Reticulophagy receptor Fam134b | Fam134b | Q8VE91 | 1 |
| Reticulophagy receptor Fam134b | Fam134b | E9QPM1 | 1 |
| Retinal dehydrogenase 2 (RALDH 2) (RalDH2) (EC 1.2.1.36) (Aldehyde dehydrogenase family 1 member A2) (Retinaldehyde-specific dehydrogenase type 2) (RALDH(II)) | Aldh1a2 Aldh1a7 Raldh2 | Q62148 | 1 |
| Retinoic acid early-inducible protein 1-epsilon (RAE-1-epsilon) | Raet1e | Q9CZQ6 | 1 |
| Retinoic acid receptor responder protein 2 (Chemerin) | Rarres2 | Q9DD06 | 1 |
| Retinoic acid receptor RXR-beta (Fragment) | Rxrb | G3UXP8 | 1 |
| Retinoic acid receptor RXR-beta (MHC class I regulatory element-binding protein H-2RIIBP) (Nuclear receptor subfamily 2 group B member 2) (Retinoid X receptor beta) | Rxrb Nr2b2 | P28704 | 1 |
| Retinoic acid receptor RXR-gamma | Rxrg | E9Q9V9 | 1 |
| Retinoic acid receptor RXR-gamma (Nuclear receptor subfamily 2 group B member 3) (Retinoid X receptor gamma) | Rxrg Nr2b3 | P28705 | 1 |
| Retinol dehydrogenase 13 (EC 1.1.1.-) | Rdh13 | Q8CEE7 | 1 |
| Retinol dehydrogenase 14 (EC 1.1.1.-) (Alcohol dehydrogenase PAN2) | Rdh14 | Q9ERI6 | 1 |
| Retinol dehydrogenase type 1 | Rdh1 | Q8VIJ7 | 1 |
| Retrotransposon-derived protein PEG10 | Peg10 | E9Q3F7 | 1 |
| Retrotransposon-derived protein PEG10 | Peg10 | H3BJQ1 | 1 |
| Retrotransposon-like protein 1 (Mammalian retrotransposon derived protein 1) (Paternally expressed gene 11 protein) (Retrotransposon-derived protein PEG11) | Rtl1 Mar1 Mart1 Peg11 | Q7M732 | 1 |
| Rho GTPase activating protein 12 (Rho GTPase-activating protein 12) | Arhgap12 | B2RUJ8 | 1 |
| Rho GTPase-activating protein 12 | Arhgap12 | S4R221 | 1 |
| Rho GTPase-activating protein 12 | Arhgap12 | S4R248 | 1 |
| Rho GTPase-activating protein 12 (Rho-type GTPase-activating protein 12) | Arhgap12 | Q8C0D4 | 1 |
| Rho GTPase-activating protein 15 (ArhGAP15) (Rho-type GTPase-activating protein 15) | Arhgap15 | Q811M1 | 1 |
| Rho GTPase-activating protein 17 | Arhgap17 | E9QAJ9 | 1 |
| Rho GTPase-activating protein 21 | Arhgap21 | B7ZCJ0 | 1 |
| Rho GTPase-activating protein 21 | Arhgap21 | B7ZCJ1 | 1 |
| Rho GTPase-activating protein 21 (Fragment) | Arhgap21 | G3UWM5 | 1 |
| Rho GTPase-activating protein 21 (Rho GTPase-activating protein 10) (Rho-type GTPase-activating protein 21) | Arhgap21 Arhgap10 Kiaa1424 | Q6DFV3 | 1 |
| Rho GTPase-activating protein 23 | Arhgap23 | F8VQ11 | 1 |
| Rho GTPase-activating protein 23 (Rho-type GTPase-activating protein 23) | Arhgap23 Kiaa1501 MNCb-1301 | Q69ZH9 | 1 |
| Rho GTPase-activating protein 29 (Rho-type GTPase-activating protein 29) | Arhgap29 | Q8CGF1 | 1 |
| Rho GTPase-activating protein 31 (Cdc42 GTPase-activating protein) | Arhgap31 Cdgap Kiaa1204 | A6X8Z5 | 1 |
| Rho GTPase-activating protein 39 | Arhgap39 D15Wsu169e Kiaa1688 | P59281 | 1 |
| Rho GTPase-activating protein 39 | Arhgap39 | H7BX46 | 1 |
| Rho GTPase-activating protein 5 (Rho-type GTPase-activating protein 5) (p190-B) | Arhgap5 Rhogap5 | P97393 | 1 |
| Rho guanine nucleotide exchange factor (GEF) 11 | Arhgef11 | Q68FM7 | 1 |
| Rho guanine nucleotide exchange factor 10 | Arhgef10 Kiaa0294 | Q8C033 | 1 |
| Rho guanine nucleotide exchange factor 12 | Arhgef12 | F8VQN6 | 1 |
| Rho guanine nucleotide exchange factor 2 | Arhgef2 | H3BJ45 | 1 |
| Rho guanine nucleotide exchange factor 2 | Arhgef2 | H3BJX8 | 1 |
| Rho guanine nucleotide exchange factor 2 | Arhgef2 | H3BKH9 | 1 |
| Rho guanine nucleotide exchange factor 2 (Rho/rac guanine nucleotide exchange factor (GEF) 2, isoform CRA_b) | Arhgef2 mCG_8844 | H3BJ40 | 1 |
| Rho guanine nucleotide exchange factor 25 (Guanine nucleotide exchange factor GEFT) (Rac/Cdc42/Rho exchange factor GEFT) (RhoA/Rac/Cdc42 guanine nucleotide exchange factor GEFT) (p63RhoGEF) | Arhgef25 D10Ertd610e Geft | Q9CWR0 | 1 |
| Rho guanine nucleotide exchange factor 3 | Arhgef3 | Q91X46 | 1 |
| Rho guanine nucleotide exchange factor 37 | Arhgef37 | E9Q5R6 | 1 |
| Rho guanine nucleotide exchange factor 39 (Fragment) | Arhgef39 E130306D19Rik | F6V695 | 1 |
| Rho guanine nucleotide exchange factor 40 | Arhgef40 | S4R189 | 1 |
| Rho guanine nucleotide exchange factor 40 | Arhgef40 | S4R2U9 | 1 |
| Rho-related GTP-binding protein RhoE (Rho family GTPase 3) (Rnd3) | Rnd3 Arhe Rhoe | P61588 | 1 |
| Rho-related GTP-binding protein RhoF | Rhof Arhf | Q8BYP3 | 1 |
| Riboflavin kinase (EC 2.7.1.26) (ATP:riboflavin 5'-phosphotransferase) (Flavokinase) (KOI-4) | Rfk | Q8CFV9 | 1 |
| Ribonuclease (EC 3.1.26.-) | Rnaseh2a | Q05C51 | 1 |
| Ribonuclease (EC 3.1.26.-) (Fragment) | Rnaseh2a | F6RP29 | 1 |
| Ribonuclease 3 (EC 3.1.26.3) (Protein Drosha) (Ribonuclease III) (RNase III) | Drosha Etohi2 Rn3 Rnasen | Q5HZJ0 | 1 |
| Ribonuclease P protein subunit p20 (RNaseP protein p20) (EC 3.1.26.5) | Pop7 Rpp20 | Q9DCH2 | 1 |
| Ribonuclease P protein subunit p21 (RNaseP protein p21) (EC 3.1.26.5) (Ribonucleoprotein V) | Rpp21 Cat60 | Q8R040 | 1 |
| Ribonuclease P protein subunit p25 (RNase P protein subunit p25) (EC 3.1.26.5) | Rpp25 | Q91WE3 | 1 |
| Ribonuclease P protein subunit p25-like protein (RNase P protein subunit-like p25) (Rpp25-like protein) | Rpp25l | Q99JH1 | 1 |
| Ribonuclease T2 (EC 3.1.27.-) (Ribonuclease 6) | Rnaset2 Rnase6pl | Q9CQ01 | 1 |
| Ribosomal oxygenase 2 | Riox2 Mina | D3YTU3 | 1 |
| Ribosomal protein 63, mitochondrial (Mitochondrial ribosomal protein 63) (Mitochondrial ribosomal protein L57) (mMRP63) | Mrpl57 Mrp63 | Q9CQF8 | 1 |
| Ribosomal protein S6 kinase (EC 2.7.11.1) | Rps6ka1 | E9PWV3 | 1 |
| Ribosomal protein S6 kinase (EC 2.7.11.1) | Rps6ka1 | F6RQA2 | 1 |
| Ribosomal protein S6 kinase (EC 2.7.11.1) | Rps6ka1 | Q505N6 | 1 |
| Ribosomal protein S6 kinase alpha-1 | Rps6ka1 | G3UZI3 | 1 |
| Ribosomal protein S6 kinase alpha-1 (Fragment) | Rps6ka1 | F6Q8A4 | 1 |
| Ribosomal protein S6 kinase beta-2 (S6K-beta-2) (S6K2) (EC 2.7.11.1) (70 kDa ribosomal protein S6 kinase 2) (p70 ribosomal S6 kinase beta) (p70 S6 kinase beta) (p70 S6K-beta) (p70 S6KB) | Rps6kb2 | Q9Z1M4 | 1 |
| Ribosomal RNA-processing protein 1 homolog B (Fragment) | Rrp1b | F7AGW8 | 1 |
| Ribosomal RNA-processing protein 7 homolog A (Gastric cancer antigen Zg14 homolog) | Rrp7a | Q9D1C9 | 1 |
| Ribosomal RNA-processing protein 8 | Rrp8 | E9PVA2 | 1 |
| Ribosome biogenesis protein BRX1 homolog (Fragment) | Brix1 | F6WEP7 | 1 |
| Ribosome maturation protein SBDS (Fragment) | Sbds | F6TN03 | 1 |
| Ribosome-recycling factor, mitochondrial (RRF) (Ribosome-releasing factor, mitochondrial) | Mrrf | Q9D6S7 | 1 |
| Ribosome-releasing factor 2, mitochondrial (Fragment) | Gfm2 | E0CXH2 | 1 |
| Ribosome-releasing factor 2, mitochondrial (RRF2mt) (Elongation factor G 2, mitochondrial) (EF-G2mt) (mEF-G 2) | Gfm2 Efg2 | Q8R2Q4 | 1 |
| Ribosome-releasing factor 2, mitochondrial (RRF2mt) (Elongation factor G 2, mitochondrial) (EF-G2mt) (mEF-G 2) | Gfm2 EFG2 GFM2 | E9Q7N5 | 1 |
| RIKEN cDNA 0610037L13 gene (Fragment) | 0610037L13Rik | A2A8E4 | 1 |
| RIKEN cDNA 1700003F12 gene | 1700003F12Rik | A2AKE5 | 1 |
| RIKEN cDNA 1700025G04 gene | 1700025G04Rik | A0A0A0MQF7 | 1 |
| RIKEN cDNA 1700037H04 gene (Fragment) | 1700037H04Rik | H7BXB9 | 1 |
| RIKEN cDNA 1810048P08, isoform CRA_d (Rab43 protein) (Ras-related protein Rab-43) | Rab43 1810048P08Rik mCG_141535 | Q91Z34 | 1 |
| RIKEN cDNA 2010300C02 gene | 2010300C02Rik | E9Q3M9 | 1 |
| RIKEN cDNA 2010300C02 gene (Fragment) | 2010300C02Rik | F7B0R9 | 1 |