| UPF0505 protein C16orf62 | C16orf62 | E7EWW0 | 1 |
| UPF0505 protein C16orf62 (Esophageal cancer-associated protein) | C16orf62 101F10.2 | Q7Z3J2 | 1 |
| UPF0547 protein C16orf87 | C16orf87 | Q6PH81 | 1 |
| UPF0553 protein C9orf64 | C9orf64 | Q5T6V5 | 1 |
| UPF0577 protein KIAA1324-like (Estrogen-induced gene 121-like protein) (hEIG121L) | KIAA1324L EIG121L | A8MWY0 | 1 |
| UPF0600 protein C5orf51 | C5orf51 | A6NDU8 | 1 |
| UPF0729 protein C18orf32 (Putative NF-kappa-B-activating protein 200) | C18orf32 | Q8TCD1 | 1 |
| Uracil phosphoribosyltransferase homolog | UPRT | Q96BW1 | 1 |
| Uracil-DNA glycosylase (EC 3.2.2.27) | 0 | E5KTA5 | 1 |
| Urea transporter 2 (Solute carrier family 14 member 2) (Urea transporter, kidney) | SLC14A2 HUT2 UT2 | Q15849 | 1 |
| Uridine phosphorylase 2 (UPase 2) (UrdPase 2) (EC 2.4.2.3) | UPP2 | O95045 | 1 |
| Uridine-cytidine kinase-like 1 (EC 2.7.1.48) | UCKL1 URKL1 F538 | Q9NWZ5 | 1 |
| Urocortin-3 (Stresscopin) (Urocortin III) (Ucn III) | UCN3 SPC | Q969E3 | 1 |
| Urokinase-type plasminogen activator (U-plasminogen activator) (uPA) (EC 3.4.21.73) [Cleaved into: Urokinase-type plasminogen activator long chain A; Urokinase-type plasminogen activator short chain A; Urokinase-type plasminogen activator chain B] | PLAU | P00749 | 1 |
| Uroplakin-1b (UP1b) (Tetraspanin-20) (Tspan-20) (Uroplakin Ib) (UPIb) | UPK1B TSPAN20 | O75841 | 1 |
| Usher syndrome type-1G protein (Scaffold protein containing ankyrin repeats and SAM domain) | USH1G SANS | Q495M9 | 1 |
| Usherin (Usher syndrome type IIa protein) (Usher syndrome type-2A protein) | USH2A | O75445 | 1 |
| UV radiation resistance-associated gene protein (p63) | UVRAG | Q9P2Y5 | 1 |
| V(D)J recombination-activating protein 1 (RAG-1) (RING finger protein 74) [Includes: Endonuclease RAG1 (EC 3.1.-.-); E3 ubiquitin-protein ligase RAG1 (EC 6.3.2.-)] | RAG1 RNF74 | P15918 | 1 |
| V-crk sarcoma virus CT10 oncogene homolog (Avian) | CRK | L7RT18 | 1 |
| V-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog | KRAS | L7RSL8 | 1 |
| V-set and immunoglobulin domain-containing protein 1 (Cell surface A33 antigen) (Glycoprotein A34) | VSIG1 GPA34 | Q86XK7 | 1 |
| V-set and immunoglobulin domain-containing protein 8 | VSIG8 C1orf204 | Q5VU13 | 1 |
| V-set and transmembrane domain-containing protein 2A | VSTM2A VSTM2 | Q8TAG5 | 1 |
| V-set and transmembrane domain-containing protein 4 | VSTM4 C10orf72 | Q8IW00 | 1 |
| V-type proton ATPase 116 kDa subunit a isoform 2 (V-ATPase 116 kDa isoform a2) (Lysosomal H(+)-transporting ATPase V0 subunit a2) (TJ6) (Vacuolar proton translocating ATPase 116 kDa subunit a isoform 2) | ATP6V0A2 | Q9Y487 | 1 |
| V-type proton ATPase 116 kDa subunit a isoform 3 (V-ATPase 116 kDa isoform a3) (Osteoclastic proton pump 116 kDa subunit) (OC-116 kDa) (OC116) (T-cell immune regulator 1) (T-cell immune response cDNA7 protein) (TIRC7) (Vacuolar proton translocating ATPase 116 kDa subunit a isoform 3) | TCIRG1 ATP6N1C ATP6V0A3 | Q13488 | 1 |
| V-type proton ATPase subunit E 2 (V-ATPase subunit E 2) (Vacuolar proton pump subunit E 2) | ATP6V1E2 ATP6E1 ATP6EL2 ATP6V1EL2 | Q96A05 | 1 |
| Vacuolar protein sorting-associated protein 13A (Chorea-acanthocytosis protein) (Chorein) | VPS13A CHAC KIAA0986 | Q96RL7 | 1 |
| Vacuolar protein sorting-associated protein 13C | VPS13C KIAA1421 | Q709C8 | 1 |
| Vacuolar protein sorting-associated protein 13D | VPS13D KIAA0453 | Q5THJ4 | 1 |
| Vacuolar-type H(+)-ATPase | 0 | Q53X12 | 1 |
| Vascular cell adhesion protein 1 (V-CAM 1) (VCAM-1) (INCAM-100) (CD antigen CD106) | VCAM1 L1CAM | P19320 | 1 |
| Vascular endothelial growth factor receptor 2 (VEGFR-2) (EC 2.7.10.1) (Fetal liver kinase 1) (FLK-1) (Kinase insert domain receptor) (KDR) (Protein-tyrosine kinase receptor flk-1) (CD antigen CD309) | KDR FLK1 VEGFR2 | P35968 | 1 |
| Vasoactive intestinal polypeptide receptor 2 (VIP-R-2) (Helodermin-preferring VIP receptor) (Pituitary adenylate cyclase-activating polypeptide type III receptor) (PACAP type III receptor) (PACAP-R-3) (PACAP-R3) (VPAC2) | VIPR2 VIP2R | P41587 | 1 |
| Vasopressin V1b receptor (V1bR) (AVPR V1b) (AVPR V3) (Antidiuretic hormone receptor 1b) (Vasopressin V3 receptor) | AVPR1B AVPR3 VPR3 | P47901 | 1 |
| Ventral anterior homeobox 2 | VAX2 | Q9UIW0 | 1 |
| Vertnin | VRTN C14orf115 | Q9H8Y1 | 1 |
| Vesicle transport protein SFT2B (SFT2 domain-containing protein 2) | SFT2D2 UNQ512/PRO1027 | O95562 | 1 |
| Vesicle transport through interaction with t-SNAREs homolog 1A (Vesicle transport v-SNARE protein Vti1-like 2) (Vti1-rp2) | VTI1A | Q96AJ9 | 1 |
| Vesicular acetylcholine transporter (VAChT) (Solute carrier family 18 member 3) | SLC18A3 VACHT | Q16572 | 1 |
| Vesicular glutamate transporter 1 (VGluT1) (Brain-specific Na(+)-dependent inorganic phosphate cotransporter) (Solute carrier family 17 member 7) | SLC17A7 BNPI VGLUT1 | Q9P2U7 | 1 |
| Vesicular glutamate transporter 2 (VGluT2) (Differentiation-associated BNPI) (Differentiation-associated Na(+)-dependent inorganic phosphate cotransporter) (Solute carrier family 17 member 6) | SLC17A6 DNPI VGLUT2 | Q9P2U8 | 1 |
| Vesicular glutamate transporter 3 (VGluT3) (Solute carrier family 17 member 8) | SLC17A8 VGLUT3 | Q8NDX2 | 1 |
| Villin-1 | VIL1 VIL | P09327 | 1 |
| Villin-like protein | VILL | O15195 | 1 |
| Visinin-like protein 1 (VILIP) (VLP-1) (Hippocalcin-like protein 3) (HLP3) | VSNL1 VISL1 | P62760 | 1 |
| Visual system homeobox 1 (Homeodomain protein RINX) (Retinal inner nuclear layer homeobox protein) (Transcription factor VSX1) | VSX1 RINX | Q9NZR4 | 1 |
| Visual system homeobox 2 (Ceh-10 homeodomain-containing homolog) (Homeobox protein CHX10) | VSX2 CHX10 HOX10 | P58304 | 1 |
| Vitamin K-dependent protein S | PROS1 PROS | P07225 | 1 |
| Voltage-dependent calcium channel gamma-1 subunit (Dihydropyridine-sensitive L-type, skeletal muscle calcium channel subunit gamma) | CACNG1 CACNLG | Q06432 | 1 |
| Voltage-dependent calcium channel gamma-2 subunit (Neuronal voltage-gated calcium channel gamma-2 subunit) (Transmembrane AMPAR regulatory protein gamma-2) (TARP gamma-2) | CACNG2 | Q9Y698 | 1 |
| Voltage-dependent calcium channel gamma-3 subunit (Neuronal voltage-gated calcium channel gamma-3 subunit) (Transmembrane AMPAR regulatory protein gamma-3) (TARP gamma-3) | CACNG3 | O60359 | 1 |
| Voltage-dependent calcium channel gamma-4 subunit (Neuronal voltage-gated calcium channel gamma-4 subunit) (Transmembrane AMPAR regulatory protein gamma-4) (TARP gamma-4) | CACNG4 | Q9UBN1 | 1 |
| Voltage-dependent calcium channel gamma-7 subunit (Neuronal voltage-gated calcium channel gamma-7 subunit) (Transmembrane AMPAR regulatory protein gamma-7) (TARP gamma-7) | CACNG7 | P62955 | 1 |
| Voltage-dependent L-type calcium channel subunit alpha-1F (Voltage-gated calcium channel subunit alpha Cav1.4) | CACNA1F CACNAF1 | O60840 | 1 |
| Voltage-dependent L-type calcium channel subunit beta-1 (CAB1) (Calcium channel voltage-dependent subunit beta 1) | CACNB1 CACNLB1 | Q02641 | 1 |
| Voltage-dependent T-type calcium channel subunit alpha-1G (Cav3.1c) (NBR13) (Voltage-gated calcium channel subunit alpha Cav3.1) | CACNA1G KIAA1123 | O43497 | 1 |
| Voltage-gated potassium channel subunit beta-1 (K(+) channel subunit beta-1) (Kv-beta-1) | KCNAB1 KCNA1B | Q14722 | 1 |
| Voltage-gated potassium channel subunit beta-3 (K(+) channel subunit beta-3) (Kv-beta-3) | KCNAB3 KCNA3B | O43448 | 1 |
| Vomeronasal type-1 receptor 4 (G-protein coupled receptor GPCR27) (hGPCR27) (V1r-like receptor 4) | VN1R4 V1RL4 | Q7Z5H5 | 1 |
| Von Hippel-Lindau-like protein (VHL-like protein) (VLP) | VHLL VLP | Q6RSH7 | 1 |
| von Willebrand factor A domain-containing protein 9 | VWA9 C15orf44 | Q96SY0 | 1 |
| VWFA and cache domain-containing protein 1 (Cache domain-containing protein 1) | CACHD1 KIAA1573 VWCD1 | Q5VU97 | 1 |
| WAP four-disulfide core domain protein 12 (Putative protease inhibitor WAP12) (Whey acidic protein 2) | WFDC12 C20orf122 WAP2 UNQ544/PRO844 | Q8WWY7 | 1 |
| WAP four-disulfide core domain protein 2 (Epididymal secretory protein E4) (Major epididymis-specific protein E4) (Putative protease inhibitor WAP5) | WFDC2 HE4 WAP5 | Q14508 | 1 |
| WAP, Kazal, immunoglobulin, Kunitz and NTR domain-containing protein 1 (Growth and differentiation factor-associated serum protein 2) (GASP-2) (hGASP-2) (WAP, follistatin, immunoglobulin, Kunitz and NTR domain-containing protein) | WFIKKN1 C16orf12 GASP2 WFIKKN PSEC0040 | Q96NZ8 | 1 |
| WAS protein family, member 3, isoform CRA_a (WASF3 protein) (Wiskott-Aldrich syndrome protein family member 3) | WASF3 hCG_29938 | Q86VQ2 | 1 |
| WASH complex subunit 7 | KIAA1033 | Q2M389 | 1 |
| WASH complex subunit FAM21C (Vaccinia virus penetration factor) (VPEF) | FAM21C KIAA0592 | Q9Y4E1 | 1 |
| WD repeat and FYVE domain-containing protein 2 (WD40- and FYVE domain-containing protein 2) (Zinc finger FYVE domain-containing protein 22) | WDFY2 WDF2 ZFYVE22 | Q96P53 | 1 |
| WD repeat and FYVE domain-containing protein 3 (Autophagy-linked FYVE protein) (Alfy) | WDFY3 KIAA0993 | Q8IZQ1 | 1 |
| WD repeat-containing protein 24 | WDR24 C16orf21 JFP7 | Q96S15 | 1 |
| WD repeat-containing protein 3 | WDR3 | Q9UNX4 | 1 |
| WD repeat-containing protein 31 | WDR31 | Q8NA23 | 1 |
| WD repeat-containing protein 37 | WDR37 KIAA0982 | Q9Y2I8 | 1 |
| WD repeat-containing protein 44 (Rabphilin-11) | WDR44 | Q5JSH3 | 1 |
| WD repeat-containing protein 65 | WDR65 | Q96MR6 | 1 |
| WD repeat-containing protein 7 (Rabconnectin-3 beta) (TGF-beta resistance-associated protein TRAG) | WDR7 KIAA0541 TRAG | Q9Y4E6 | 1 |
| WD repeat-containing protein C2orf44 | C2orf44 PP384 | Q9H6R7 | 1 |
| WEE1 homolog (S. pombe) | WEE1 | Q86V29 | 1 |
| Williams-Beuren syndrome chromosomal region 28 protein | WBSCR28 | Q6UE05 | 1 |
| Wolframin | WFS1 | O76024 | 1 |
| WSC domain-containing protein 1 | WSCD1 KIAA0523 | Q658N2 | 1 |
| WW domain binding protein 1-like (Outcome predictor in acute leukemia 1) | WBP1L C10orf26 OPA1L | Q9NX94 | 1 |
| X antigen family member 3 (XAGE-3) (Cancer/testis antigen 12.3) (CT12.3) (G antigen family D member 4) (Placenta-specific gene 6 protein) | XAGE3 GAGED4 PLAC6 PP9012 | Q8WTP9 | 1 |
| X-linked interleukin-1 receptor accessory protein-like 2 (IL-1 receptor accessory protein-like 2) (IL-1-RAPL-2) (IL-1RAPL-2) (IL1RAPL-2) (IL1RAPL-2-related protein) (Interleukin-1 receptor 9) (IL-1R-9) (IL-1R9) (Three immunoglobulin domain-containing IL-1 receptor-related 1) (TIGIRR-1) | IL1RAPL2 IL1R9 | Q9NP60 | 1 |
| X-linked retinitis pigmentosa GTPase regulator-interacting protein 1 (RPGR-interacting protein 1) | RPGRIP1 | Q96KN7 | 1 |
| X-ray repair complementing defective repair in Chinese hamster cells 6 (Ku autoantigen, 70kDa), isoform CRA_b (X-ray repair cross-complementing protein 6) (cDNA FLJ31224 fis, clone KIDNE2004305, highly similar to ATP-dependent DNA helicase 2 subunit 1 (EC 3.6.1.-)) | XRCC6 hCG_2013151 | B1AHC8 | 1 |
| Xaa-Pro aminopeptidase 2 (EC 3.4.11.9) (Aminoacylproline aminopeptidase) (Membrane-bound aminopeptidase P) (Membrane-bound APP) (Membrane-bound AmP) (mAmP) (X-Pro aminopeptidase 2) | XPNPEP2 | O43895 | 1 |
| Xenotropic and polytropic retrovirus receptor 1 (Protein SYG1 homolog) (Xenotropic and polytropic murine leukemia virus receptor X3) (X-receptor) | XPR1 SYG1 XR | Q9UBH6 | 1 |
| Xin actin-binding repeat-containing protein 2 (Beta-xin) (Cardiomyopathy-associated protein 3) (Xeplin) | XIRP2 CMYA3 | A4UGR9 | 1 |
| XK-related protein 2 (Membrane protein XPLAC) (X Kell blood group-related, X-linked) | XKRX XKR2 XPLAC XRG2 | Q6PP77 | 1 |
| XK-related protein 3 (X Kell blood group-related 3) (XTES) | XKR3 XRG3 | Q5GH77 | 1 |
| XK-related protein 5 | XKR5 XRG5 UNQ2754/PRO6493 | Q6UX68 | 1 |
| XK-related protein 6 | XKR6 C8orf21 C8orf5 C8orf7 XRG6 | Q5GH73 | 1 |
| Xylosyltransferase 1 (EC 2.4.2.26) (Peptide O-xylosyltransferase 1) (Xylosyltransferase I) (XT-I) (XylT-I) | XYLT1 XT1 | Q86Y38 | 1 |
| Y+L amino acid transporter 1 (Monocyte amino acid permease 2) (MOP-2) (Solute carrier family 7 member 7) (y(+)L-type amino acid transporter 1) (Y+LAT1) (y+LAT-1) | SLC7A7 | Q9UM01 | 1 |
| Y+L amino acid transporter 2 (Cationic amino acid transporter, y+ system) (Solute carrier family 7 member 6) (y(+)L-type amino acid transporter 2) (Y+LAT2) (y+LAT-2) | SLC7A6 KIAA0245 | Q92536 | 1 |
| Yae1 domain-containing protein 1 | YAE1D1 C7orf36 GK003 | Q9NRH1 | 1 |