| Rab effector Noc2 (No C2 domains protein) (Rabphilin-3A-like protein) | RPH3AL NOC2 | Q9UNE2 | 3 |
| Rab GDP dissociation inhibitor | GDI2 HEL-S-46e hCG_24071 | Q6IAT1 | 3 |
| Rab GDP dissociation inhibitor (Fragment) | GDI2 | Q5SX86 | 3 |
| Rab-like protein 2A | RABL2A | Q9UBK7 | 3 |
| RAB33B, member RAS oncogene family | RAB33B | Q5U602 | 3 |
| RAB6A, member RAS oncogene family isoform a variant (Fragment) | 0 | Q53ET8 | 3 |
| Radixin (Fragment) | RDX | E9PNV3 | 3 |
| Ran guanine nucleotide release factor (RanGNRF) (Ran-binding protein MOG1) | RANGRF MOG1 RANGNRF HSPC165 HSPC236 MDS5 | Q9HD47 | 3 |
| RANBP2-like and GRIP domain-containing protein 1 (Ran-binding protein 2-like 6) (RanBP2-like 6) (RanBP2L6) | RGPD1 RANBP2L6 RGP1 | P0DJD0 | 3 |
| RanBP2-like and GRIP domain-containing protein 4 | RGPD4 RGP4 | Q7Z3J3 | 3 |
| RANBP2-like and GRIP domain-containing protein 8 (Ran-binding protein 2-like 3) (RanBP2-like 3) (RanBP2L3) | RGPD8 RANBP2ALPHA RANBP2L1 RANBP2L3 | O14715 | 3 |
| Rap guanine nucleotide exchange factor 5 (Guanine nucleotide exchange factor for Rap1) (M-Ras-regulated Rap GEF) (MR-GEF) (Related to Epac) (Repac) | RAPGEF5 GFR KIAA0277 MRGEF | Q92565 | 3 |
| Ras association domain-containing protein 5 (New ras effector 1) (Regulator for cell adhesion and polarization enriched in lymphoid tissues) (RAPL) | RASSF5 NORE1 RAPL | Q8WWW0 | 3 |
| Ras association domain-containing protein 6 | RASSF6 | Q6ZTQ3 | 3 |
| Ras GTPase-activating protein 2 | RASA2 | D6RBA9 | 3 |
| Ras GTPase-activating-like protein IQGAP2 (Fragment) | IQGAP2 | E7EWC2 | 3 |
| Ras-related C3 botulinum toxin substrate 2 (Ras-related C3 botulinum toxin substrate 2 (Rho family, small GTP binding protein Rac2), isoform CRA_c) | RAC2 hCG_1811995 | B1AH80 | 3 |
| Ras-related GTP binding C, isoform CRA_a | RRAGC hCG_25149 | D3DPT8 | 3 |
| Ras-related GTP-binding protein RAB39 (Ras-related protein Rab-34, isoform NARR) | RAB34 | Q96PJ7 | 3 |
| Ras-related protein Rab-26 | RAB26 | Q9ULW5 | 3 |
| Ras-related protein Rab-2A (Fragment) | RAB2A | H7C125 | 3 |
| Ras-related protein Rab-2B | RAB2B | Q6NZ33 | 3 |
| Ras-related protein Rab-34, isoform NARR | RAB34 | A8MYQ9 | 3 |
| Ras-related protein Rab-5C (Fragment) | RAB5C | F8VVK3 | 3 |
| Ras-related protein Rap-1b (Fragment) | RAP1B | F5H823 | 3 |
| Ras-related protein Rap-1b (GTP-binding protein smg p21B) | RAP1B OK/SW-cl.11 | B4DW74 | 3 |
| Ras-related protein Rap-2a | RAP2A | F6U784 | 3 |
| RDX protein (Fragment) | RDX | Q05CU6 | 3 |
| Rearranged Vl3l gene segment (Rearranged Vl3l segment) (Fragment) | VL3L | Q7Z2E8 | 3 |
| Receptor expression-enhancing protein 4 | REEP4 C8orf20 PP432 | Q9H6H4 | 3 |
| Receptor expression-enhancing protein 5 (cDNA FLJ50528, moderately similar to Receptor expression-enhancing protein 5) | REEP5 | B7Z332 | 3 |
| Receptor of-activated protein C kinase 1 | RACK1 | D6RF23 | 3 |
| Receptor of-activated protein C kinase 1 | RACK1 | D6RAU2 | 3 |
| Receptor of-activated protein C kinase 1 (Fragment) | RACK1 | D6RFX4 | 3 |
| Receptor of-activated protein C kinase 1 (Fragment) | RACK1 | H0YAM7 | 3 |
| Receptor of-activated protein C kinase 1 (Fragment) | RACK1 | H0Y9P0 | 3 |
| Receptor protein-tyrosine kinase (EC 2.7.10.1) | EGFR | Q504U8 | 3 |
| Receptor protein-tyrosine kinase (EC 2.7.10.1) | EGFR | E9PFD7 | 3 |
| Receptor protein-tyrosine kinase (EC 2.7.10.1) (Fragment) | EPHB2 variant protein | Q4LE53 | 3 |
| Receptor-interacting serine/threonine-protein kinase 2 (EC 2.7.11.1) (CARD-containing interleukin-1 beta-converting enzyme-associated kinase) (CARD-containing IL-1 beta ICE-kinase) (RIP-like-interacting CLARP kinase) (Receptor-interacting protein 2) (RIP-2) (Tyrosine-protein kinase RIPK2) (EC 2.7.10.2) | RIPK2 CARDIAK RICK RIP2 UNQ277/PRO314/PRO34092 | O43353 | 3 |
| Receptor-interacting serine/threonine-protein kinase 4 (EC 2.7.11.1) (Ankyrin repeat domain-containing protein 3) (PKC-delta-interacting protein kinase) | RIPK4 ANKRD3 DIK | P57078 | 3 |
| Receptor-type tyrosine-protein phosphatase (EC 3.1.3.48) | 0 | A8K2Z9 | 3 |
| Receptor-type tyrosine-protein phosphatase (EC 3.1.3.48) | 0 | B7Z2A4 | 3 |
| Receptor-type tyrosine-protein phosphatase F (Fragment) | PTPRF | H0Y4H1 | 3 |
| Receptor-type tyrosine-protein phosphatase F (Fragment) | PTPRF | H0Y6Z7 | 3 |
| Receptor-type tyrosine-protein phosphatase R (R-PTP-R) (EC 3.1.3.48) (Ch-1PTPase) (NC-PTPCOM1) (Protein-tyrosine phosphatase PCPTP1) | PTPRR ECPTP PTPRQ | Q15256 | 3 |
| Receptor-type tyrosine-protein phosphatase U (R-PTP-U) (EC 3.1.3.48) (Pancreatic carcinoma phosphatase 2) (PCP-2) (Protein-tyrosine phosphatase J) (PTP-J) (hPTP-J) (Protein-tyrosine phosphatase pi) (PTP pi) (Protein-tyrosine phosphatase receptor omicron) (PTP-RO) (Receptor-type protein-tyrosine phosphatase psi) (R-PTP-psi) | PTPRU FMI PCP2 PTPRO | Q92729 | 3 |
| RecQ-mediated genome instability protein 2 (hRMI2) (BLM-associated protein of 18 kDa) (BLAP18) | RMI2 C16orf75 | Q96E14 | 3 |
| Regenerating islet-derived protein 3-alpha (REG-3-alpha) (Hepatointestinal pancreatic protein) (HIP/PAP) (Human proislet peptide) (Pancreatitis-associated protein 1) (Regenerating islet-derived protein III-alpha) (Reg III-alpha) [Cleaved into: Regenerating islet-derived protein 3-alpha 16.5 kDa form; Regenerating islet-derived protein 3-alpha 15 kDa form] | REG3A HIP PAP PAP1 | Q06141 | 3 |
| Regenerating islet-derived protein 4 (REG-4) (Gastrointestinal secretory protein) (REG-like protein) (Regenerating islet-derived protein IV) (Reg IV) | REG4 GISP RELP | Q9BYZ8 | 3 |
| Regulator of cell cycle RGCC (Response gene to complement 32 protein) (RGC-32) | RGCC C13orf15 RGC32 | Q9H4X1 | 3 |
| Regulator of G-protein signaling 4 (RGP4) (RGS4) | RGS4 | P49798 | 3 |
| RELA protein (Transcription factor p65) | RELA | Q2TAM5 | 3 |
| Retina-specific copper amine oxidase (RAO) (EC 1.4.3.21) (Amine oxidase [copper-containing]) (Semicarbazide-sensitive amine oxidase) (SSAO) | AOC2 | O75106 | 3 |
| Retinoblastoma-like protein 2 (130 kDa retinoblastoma-associated protein) (p130) (Retinoblastoma-related protein 2) (RBR-2) (pRb2) | RBL2 RB2 | Q08999 | 3 |
| Rheumatoid factor C6 light chain (Fragment) | V1 | A0N5G1 | 3 |
| Rho GDP-dissociation inhibitor 2 (Fragment) | ARHGDIB | F5H2R5 | 3 |
| Rho GTPase-activating protein 23 (Rho-type GTPase-activating protein 23) | ARHGAP23 KIAA1501 | Q9P227 | 3 |
| Rho GTPase-activating protein 45 | ARHGAP45 | K7ES92 | 3 |
| Rho guanine nucleotide exchange factor 26 (SH3 domain-containing guanine exchange factor) | ARHGEF26 SGEF HMFN1864 | Q96DR7 | 3 |
| Rho guanine nucleotide exchange factor 9 (Collybistin) (PEM-2 homolog) (Rac/Cdc42 guanine nucleotide exchange factor 9) | ARHGEF9 ARHDH9 KIAA0424 | O43307 | 3 |
| Rho-related GTP-binding protein RhoC | RHOC | Q5JR05 | 3 |
| Rho-related GTP-binding protein RhoC (Fragment) | RHOC | Q5JR06 | 3 |
| Rho-related GTP-binding protein RhoH (GTP-binding protein TTF) (Translocation three four protein) | RHOH ARHH TTF | Q15669 | 3 |
| Ribonuclease inhibitor (Fragment) | RNH1 | H0YCR7 | 3 |
| Ribosomal protein L15 (Fragment) | RPL15 | E7EX53 | 3 |
| Ribosomal protein L35, isoform CRA_a | RPL35 hCG_2021297 | A0A024R866 | 3 |
| Ribosomal protein S4, Y-linked 1 Y isoform variant (Fragment) | 0 | Q53HI6 | 3 |
| Ribosomal protein S6 kinase alpha-4 (S6K-alpha-4) (EC 2.7.11.1) (90 kDa ribosomal protein S6 kinase 4) (Nuclear mitogen- and stress-activated protein kinase 2) (Ribosomal protein kinase B) (RSKB) | RPS6KA4 MSK2 | O75676 | 3 |
| Ribosomal protein S6 kinase alpha-6 (S6K-alpha-6) (EC 2.7.11.1) (90 kDa ribosomal protein S6 kinase 6) (p90-RSK 6) (p90RSK6) (Ribosomal S6 kinase 4) (RSK-4) (pp90RSK4) | RPS6KA6 RSK4 | Q9UK32 | 3 |
| Ribosyldihydronicotinamide dehydrogenase [quinone] | NQO2 | Q5TD07 | 3 |
| RING finger protein 141 (Zinc finger protein 230) | RNF141 ZNF230 | Q8WVD5 | 3 |
| RNA binding protein S1 (RNA binding protein S1, serine-rich domain, isoform CRA_a) | RNPS1 rnps1 hCG_1989969 | D3DU92 | 3 |
| RNA helicase (EC 3.6.4.13) | DDX55 | F5H5U2 | 3 |
| RNA-binding protein 20 (RNA-binding motif protein 20) | RBM20 | Q5T481 | 3 |
| RNA-binding Raly-like protein (hRALYL) (Heterogeneous nuclear ribonucleoprotein C-like 3) (hnRNP core protein C-like 3) | RALYL HNRPCL3 | Q86SE5 | 3 |
| RPL17-C18orf32 readthrough | RPL17-C18orf32 | A0A0A0MRF8 | 3 |
| RPL26 protein | RPL26 | Q6IBH6 | 3 |
| RPLP1 protein (Fragment) | RPLP1 | Q6ICQ4 | 3 |
| RPS21 protein (Ribosomal protein S21) (Ribosomal protein S21, isoform CRA_d) (Fragment) | RPS21 hCG_41768 | Q6FGH5 | 3 |
| RRBP1 protein | RRBP1 | A1A5C4 | 3 |
| rRNA methyltransferase 3, mitochondrial (EC 2.1.1.-) (16S rRNA (guanosine(1370)-2'-O)-methyltransferase) (16S rRNA [Gm1370] 2'-O-methyltransferase) (RNA methyltransferase-like protein 1) | MRM3 RNMTL1 HC90 | Q9HC36 | 3 |
| rRNA-processing protein UTP23 homolog | UTP23 C8orf53 | Q9BRU9 | 3 |
| RSL1D1 protein (Fragment) | RSL1D1 | A0PJ61 | 3 |
| RUN and SH3 domain-containing protein 1 (New molecule containing SH3 at the carboxy-terminus) (Nesca) | RUSC1 NESCA | Q9BVN2 | 3 |
| Runt-related transcription factor 1 (Acute myeloid leukemia 1 protein) (Core-binding factor subunit alpha-2) (CBF-alpha-2) (Oncogene AML-1) (Polyomavirus enhancer-binding protein 2 alpha B subunit) (PEA2-alpha B) (PEBP2-alpha B) (SL3-3 enhancer factor 1 alpha B subunit) (SL3/AKV core-binding factor alpha B subunit) | RUNX1 AML1 CBFA2 | Q01196 | 3 |
| RWD domain-containing protein 2A | RWDD2A RWDD2 | Q9UIY3 | 3 |
| S-arrestin (48 kDa protein) (Retinal S-antigen) (S-AG) (Rod photoreceptor arrestin) | SAG | A0FDN6 | 3 |
| Scavenger receptor cysteine-rich type 1 protein M160 (CD163 antigen-like 1) (CD antigen CD163b) | CD163L1 CD163B M160 UNQ6434/PRO23202 | Q9NR16 | 3 |
| SCL-interrupting locus protein (TAL-1-interrupting locus protein) | STIL SIL | Q15468 | 3 |
| SEC13-like 1 isoform b variant (Fragment) | 0 | Q53GB2 | 3 |
| Secretoglobin family 1D member 1 (Lipophilin-A) | SCGB1D1 LIPHA LPNA | O95968 | 3 |
| Selenoprotein T (SelT) (Thioredoxin reductase-like enzyme) (EC 1.8.1.9) | SELENOT SELT UNQ150/PRO176 | P62341 | 3 |
| Semaphorin-6A (Semaphorin VIA) (Sema VIA) (Semaphorin-6A-1) (SEMA6A-1) | SEMA6A KIAA1368 SEMAQ | Q9H2E6 | 3 |
| Septin 6, isoform CRA_b (Septin-6) | SEPT6 hCG_23191 | B1AMS2 | 3 |
| Serine hydroxymethyltransferase (EC 2.1.2.1) (Fragment) | 0 | Q53ET4 | 3 |
| Serine hydroxymethyltransferase (EC 2.1.2.1) (Fragment) | 0 | Q53ET7 | 3 |
| Serine hydroxymethyltransferase 1 (Soluble), isoform CRA_b | SHMT1 hCG_1985219 | D3DXC9 | 3 |
| Serine protease inhibitor Kazal-type 5 (Lympho-epithelial Kazal-type-related inhibitor) (LEKTI) [Cleaved into: Hemofiltrate peptide HF6478; Hemofiltrate peptide HF7665] | SPINK5 | Q9NQ38 | 3 |
| Serine--tRNA ligase, mitochondrial (cDNA FLJ58068, highly similar to Seryl-tRNA synthetase, mitochondrial (EC 6.1.1.11)) | SARS2 | B4DJM9 | 3 |