| Cyclic nucleotide-gated cation channel beta-3 (Cone photoreceptor cGMP-gated channel subunit beta) (Cyclic nucleotide-gated cation channel modulatory subunit) (Cyclic nucleotide-gated channel beta-3) (CNG channel beta-3) | CNGB3 | Q9NQW8 | 1 |
| Cyclic nucleotide-gated olfactory channel (Cyclic nucleotide-gated cation channel 2) (Cyclic nucleotide-gated channel alpha-2) (CNG channel alpha-2) (CNG-2) (CNG2) | CNGA2 CNCA CNCA1 CNCG2 | Q16280 | 1 |
| Cyclin N-terminal domain-containing protein 2 | CNTD2 | Q9H8S5 | 1 |
| Cyclin-D-binding Myb-like transcription factor 1 | DMTF1 | E7EPA0 | 1 |
| Cyclin-D-binding Myb-like transcription factor 1 (Fragment) | DMTF1 | J3KRC1 | 1 |
| Cyclin-D-binding Myb-like transcription factor 1 (hDMTF1) (Cyclin-D-interacting Myb-like protein 1) (hDMP1) | DMTF1 DMP1 | Q9Y222 | 1 |
| Cyclin-dependent kinase 1 (Fragment) | CDK1 | E5RIU6 | 1 |
| Cyclin-dependent kinase 10 (EC 2.7.11.22) (Cell division protein kinase 10) (Serine/threonine-protein kinase PISSLRE) | CDK10 | Q15131 | 1 |
| Cyclin-dependent kinase 10 (Fragment) | CDK10 | H3BT74 | 1 |
| Cyclin-dependent kinase 14 | CDK14 | E7EUK8 | 1 |
| Cyclin-dependent kinase 16 | CDK16 | A0A087WZU2 | 1 |
| Cyclin-dependent kinase 16 (Fragment) | CDK16 | E5RGN0 | 1 |
| Cyclin-dependent kinase 19 (EC 2.7.11.22) (CDC2-related protein kinase 6) (Cell division cycle 2-like protein kinase 6) (Cell division protein kinase 19) (Cyclin-dependent kinase 11) (Death-preventing kinase) | CDK19 CDC2L6 CDK11 KIAA1028 | Q9BWU1 | 1 |
| Cyclin-dependent kinase 2 | CDK2 | E7ESI2 | 1 |
| Cyclin-dependent kinase 2 (Cyclin-dependent kinase 2, isoform CRA_c) | CDK2 hCG_24992 | G3V5T9 | 1 |
| Cyclin-dependent kinase 20 (EC 2.7.11.22) (CDK-activating kinase p42) (CAK-kinase p42) (Cell cycle-related kinase) (Cell division protein kinase 20) (Cyclin-dependent protein kinase H) (Cyclin-kinase-activating kinase p42) | CDK20 CCRK CDCH | Q8IZL9 | 1 |
| Cyclin-dependent kinase 4 | CDK4 | F8VTV8 | 1 |
| Cyclin-dependent kinase 4 inhibitor D (p19-INK4d) | CDKN2D | P55273 | 1 |
| Cyclin-dependent kinase 5 activator 1 (CDK5 activator 1) (Cyclin-dependent kinase 5 regulatory subunit 1) (TPKII regulatory subunit) [Cleaved into: Cyclin-dependent kinase 5 activator 1, p35 (p35); Cyclin-dependent kinase 5 activator 1, p25 (p25) (Tau protein kinase II 23 kDa subunit) (p23)] | CDK5R1 CDK5R NCK5A | Q15078 | 1 |
| Cyclin-dependent kinase 5 activator 2 (CDK5 activator 2) (Cyclin-dependent kinase 5 regulatory subunit 2) (p39) (p39I) | CDK5R2 NCK5AI | Q13319 | 1 |
| Cyclin-dependent kinase inhibitor 1B | CDKN1B | E7ES52 | 1 |
| Cyclin-dependent kinase inhibitor 1B (Cyclin-dependent kinase inhibitor p27) (p27Kip1) | CDKN1B KIP1 | P46527 | 1 |
| Cyclin-dependent kinase inhibitor 1C | CDKN1C | A6NK88 | 1 |
| Cyclin-dependent kinase inhibitor 1C (Cyclin-dependent kinase inhibitor p57) (p57Kip2) | CDKN1C KIP2 | P49918 | 1 |
| Cyclin-dependent kinase inhibitor 2A | CDKN2A | J3QRG6 | 1 |
| Cyclin-dependent kinase-like 2 (EC 2.7.11.22) (Protein kinase p56 KKIAMRE) (Serine/threonine-protein kinase KKIAMRE) | CDKL2 | Q92772 | 1 |
| Cyclin-dependent kinase-like 3 (EC 2.7.11.22) (Serine/threonine-protein kinase NKIAMRE) | CDKL3 NKIAMRE | Q8IVW4 | 1 |
| Cyclin-F (Fragment) | CCNF | H3BUD3 | 1 |
| Cyclin-G-associated kinase | GAK | A0A087X1U9 | 1 |
| Cyclin-G-associated kinase | GAK | D6RF16 | 1 |
| Cyclin-G-associated kinase (Fragment) | GAK | D6RAW3 | 1 |
| Cyclin-G1 (Cyclin-G) | CCNG1 CCNG CYCG1 | P51959 | 1 |
| Cyclin-I2 | CCNI2 | Q6ZMN8 | 1 |
| Cyclin-T1 (CycT1) (Cyclin-T) | CCNT1 | O60563 | 1 |
| Cylicin-1 (Cylicin I) (Multiple-band polypeptide I) | CYLC1 CYL CYL1 | P35663 | 1 |
| Cylicin-2 (Cylicin II) (Multiple-band polypeptide II) | CYLC2 CYL2 | Q14093 | 1 |
| CYP51A1 protein (Fragment) | CYP51A1 | Q05D40 | 1 |
| CYR61 protein | CYR61 | Q9UID7 | 1 |
| Cystatin-A | CSTA | C9J0E4 | 1 |
| Cystatin-M (Cystatin-6) (Cystatin-E) | CST6 | Q540N7 | 1 |
| Cysteine and glycine-rich protein 1 | CSRP1 | E9PP21 | 1 |
| Cysteine and glycine-rich protein 1 | CSRP1 | E9PS42 | 1 |
| Cysteine and glycine-rich protein 1 (Cysteine-rich protein 1) (CRP) (CRP1) (Epididymis luminal protein 141) (HEL-141) | CSRP1 CSRP CYRP | A8K268 | 1 |
| Cysteine and glycine-rich protein 1 (Cysteine-rich protein 1) (CRP) (CRP1) (Epididymis luminal protein 141) (HEL-141) | CSRP1 CSRP CYRP | Q5U0J2 | 1 |
| Cysteine and histidine-rich domain-containing protein 1 | CHORDC1 | E9PIZ4 | 1 |
| Cysteine and histidine-rich domain-containing protein 1 (CHORD domain-containing protein 1) (CHORD-containing protein 1) (CHP-1) (Protein morgana) | CHORDC1 CHP1 | B2R6P8 | 1 |
| Cysteine and histidine-rich protein 1 | CYHR1 KIAA0496 | Q6ZMK1 | 1 |
| Cysteine and histidine-rich protein 1 | CYHR1 | E9PJD7 | 1 |
| Cysteine sulfinic acid decarboxylase (Fragment) | CSAD | H3BTP4 | 1 |
| Cysteine--tRNA ligase, cytoplasmic | CARS | E9PLP0 | 1 |
| Cysteine-rich DPF motif domain-containing protein 1 | CDPF1 C22orf40 | Q6NVV7 | 1 |
| Cysteine-rich hydrophobic domain-containing protein 1 (Brain X-linked protein) | CHIC1 BRX | Q5VXU3 | 1 |
| Cysteine-rich motor neuron 1 protein (Fragment) | CRIM1 | H7C2T6 | 1 |
| Cysteine-rich protein 2 (Fragment) | CRIP2 | H0YHD8 | 1 |
| Cysteine-rich protein 2-binding protein (CSRP2-binding protein) (ADA2A-containing complex subunit 2) (ATAC2) (CRP2-binding partner) (CRP2BP) (Lysine acetyltransferase 14) | KAT14 CSRP2BP | Q9H8E8 | 1 |
| Cysteine-rich secretory protein 2 (CRISP-2) (Cancer/testis antigen 36) (CT36) (Testis-specific protein TPX-1) | CRISP2 GAPDL5 TPX1 | P16562 | 1 |
| Cysteine-rich secretory protein LCCL domain-containing 1 (cDNA FLJ57290, highly similar to Homo sapiens cysteine-rich secretory protein LCCL domain containing 1 (CRISPLD1), mRNA) | CRISPLD1 | B7Z8V9 | 1 |
| Cysteine-rich secretory protein LCCL domain-containing 2 | CRISPLD2 | H3BTI0 | 1 |
| Cysteine-rich with EGF-like domain protein 1 | CRELD1 | F8WBY3 | 1 |
| Cysteine-rich with EGF-like domain protein 2 | CRELD2 UNQ185/PRO211 | Q6UXH1 | 1 |
| Cysteine/serine-rich nuclear protein 1 (CSRNP-1) (Axin-1 up-regulated gene 1 protein) (Protein URAX1) (TGF-beta-induced apoptosis protein 3) (TAIP-3) | CSRNP1 AXUD1 TAIP3 | Q96S65 | 1 |
| Cystic fibrosis transmembrane conductance regulator (EC 3.6.3.49) (ATP-binding cassette sub-family C member 7) (Channel conductance-controlling ATPase) (cAMP-dependent chloride channel) (Fragment) | CFTR | E7EPB6 | 1 |
| Cytidine and dCMP deaminase domain-containing protein 1 (Fragment) | CDADC1 | H0Y447 | 1 |
| Cytochrome b-c1 complex subunit 2, mitochondrial (Fragment) | UQCRC2 | H3BP04 | 1 |
| Cytochrome b-c1 complex subunit 7 | UQCRB | E5RIT7 | 1 |
| Cytochrome b5 reductase 4 (EC 1.6.2.2) (Flavohemoprotein b5/b5R) (b5+b5R) (N-terminal cytochrome b5 and cytochrome b5 oxidoreductase domain-containing protein) (cb5/cb5R) | CYB5R4 NCB5OR | Q7L1T6 | 1 |
| Cytochrome c oxidase assembly factor 1 homolog | COA1 | F2Z2D1 | 1 |
| Cytochrome c oxidase assembly protein COX19 | COX19 | F8WEL9 | 1 |
| Cytochrome c oxidase assembly protein COX19 (hCOX19) | COX19 | Q49B96 | 1 |
| Cytochrome c oxidase copper chaperone (Fragment) | COX17 | H7C4E5 | 1 |
| Cytochrome c oxidase copper chaperone (HCG2022684, isoform CRA_b) | COX17 hCG_2022684 | C9J8T6 | 1 |
| Cytochrome c oxidase subunit 2 | COX2 COII coxII | Q7Y6N0 | 1 |
| Cytochrome c oxidase subunit 2 | COX2 | I6N6Q6 | 1 |
| Cytochrome c oxidase subunit 3 (Cytochrome c oxidase polypeptide III) | MT-CO3 COIII COXIII MTCO3 | P00414 | 1 |
| Cytochrome c oxidase subunit 4 isoform 1, mitochondrial | COX4I1 | H3BN72 | 1 |
| Cytochrome c oxidase subunit 4 isoform 1, mitochondrial (Fragment) | COX4I1 | H3BPG0 | 1 |
| Cytochrome c oxidase subunit 7A1, mitochondrial (Cytochrome c oxidase subunit VIIa-heart) (Cytochrome c oxidase subunit VIIa-H) (Cytochrome c oxidase subunit VIIa-muscle) (Cytochrome c oxidase subunit VIIa-M) | COX7A1 COX7AH | P24310 | 1 |
| Cytochrome c oxidase subunit 8A, mitochondrial (Cytochrome c oxidase polypeptide VIII-liver/heart) (Cytochrome c oxidase subunit 8-2) | COX8A COX8 COX8L | P10176 | 1 |
| Cytochrome c oxidase subunit 8C, mitochondrial (Cytochrome c oxidase polypeptide 8 isoform 3) (Cytochrome c oxidase polypeptide VIII isoform 3) (COX VIII-3) (Cytochrome c oxidase subunit 8-3) (COX8-3) (Cytochrome c oxidase subunit VIIIC) | COX8C | Q7Z4L0 | 1 |
| Cytochrome P450 1A1 (EC 1.14.14.1) (CYPIA1) (Cytochrome P450 form 6) (Cytochrome P450-C) (Cytochrome P450-P1) | CYP1A1 | P04798 | 1 |
| Cytochrome P450 20A1 | CYP20A1 | F8WBE2 | 1 |
| Cytochrome P450 20A1 (EC 1.14.-.-) | CYP20A1 UNQ667/PRO1301 | Q6UW02 | 1 |
| Cytochrome P450 26A1 (EC 1.14.13.-) (Cytochrome P450 retinoic acid-inactivating 1) (Cytochrome P450RAI) (hP450RAI) (Retinoic acid 4-hydroxylase) (Retinoic acid-metabolizing cytochrome) | CYP26A1 CYP26 P450RAI1 | O43174 | 1 |
| Cytochrome P450 26B1 (EC 1.14.13.-) (Cytochrome P450 26A2) (Cytochrome P450 retinoic acid-inactivating 2) (Cytochrome P450RAI-2) (Retinoic acid-metabolizing cytochrome) | CYP26B1 CYP26A2 P450RAI2 | Q9NR63 | 1 |
| Cytochrome P450 2A13 (EC 1.14.14.1) (CYPIIA13) | CYP2A13 | Q16696 | 1 |
| Cytochrome P450 2C18 (EC 1.14.14.1) (CYPIIC18) (Cytochrome P450-6b/29c) | CYP2C18 | P33260 | 1 |
| Cytochrome P450 2C8 (EC 1.14.14.1) (CYPIIC8) (Cytochrome P450 IIC2) (Cytochrome P450 MP-12) (Cytochrome P450 MP-20) (Cytochrome P450 form 1) (S-mephenytoin 4-hydroxylase) | CYP2C8 | P10632 | 1 |
| Cytochrome P450 2D6 | CYP2D6 | E7ENE7 | 1 |
| Cytochrome P450 2D6 | CYP2D6 | Q2XND8 | 1 |
| Cytochrome P450 2D6 (EC 1.14.14.1) (CYPIID6) (Cholesterol 25-hydroxylase) (Cytochrome P450-DB1) (Debrisoquine 4-hydroxylase) | CYP2D6 CYP2DL1 | P10635 | 1 |
| Cytochrome P450 2D6 (EC 1.14.14.1) (CYPIID6) (Cholesterol 25-hydroxylase) (Cytochrome P450-DB1) (Debrisoquine 4-hydroxylase) | CYP2D6 CYP2DL1 | Q6NXU8 | 1 |
| Cytochrome P450 2J2 (EC 1.14.14.1) (Arachidonic acid epoxygenase) (CYPIIJ2) | CYP2J2 | Q8TF13 | 1 |
| Cytochrome P450 2J2 (EC 1.14.14.1) (Arachidonic acid epoxygenase) (CYPIIJ2) | CYP2J2 | P51589 | 1 |
| Cytochrome P450 3A4 (EC 1.14.13.-) (1,8-cineole 2-exo-monooxygenase) (EC 1.14.13.157) (Albendazole monooxygenase) (EC 1.14.13.32) (Albendazole sulfoxidase) (CYPIIIA3) (CYPIIIA4) (Cholesterol 25-hydroxylase) (EC 1.14.14.1) (Cytochrome P450 3A3) (Cytochrome P450 HLp) (Cytochrome P450 NF-25) (Cytochrome P450-PCN1) (Nifedipine oxidase) (Quinine 3-monooxygenase) (EC 1.14.13.67) (Taurochenodeoxycholate 6-alpha-hydroxylase) (EC 1.14.13.97) | CYP3A4 CYP3A3 | P08684 | 1 |
| Cytochrome P450 4A22 (CYPIVA22) (Fatty acid omega-hydroxylase) (Lauric acid omega-hydroxylase) (Long-chain fatty acid omega-monooxygenase) (EC 1.14.13.205) | CYP4A22 | Q5TCH4 | 1 |
| Cytochrome P450 4F8 (EC 1.14.14.1) (CYPIVF8) | CYP4F8 | P98187 | 1 |
| Cytochrome P450 4X1 (EC 1.14.14.1) (CYPIVX1) | CYP4X1 UNQ1929/PRO4404 | Q8N118 | 1 |
| Cytochrome P450 4Z1 (EC 1.14.14.1) (CYPIVZ1) | CYP4Z1 UNQ3060/PRO9882 | Q86W10 | 1 |
| Cytochrome P450, family 1, subfamily B, polypeptide 1 | 0 | Q5TZV6 | 1 |
| Cytohesin-1 (Fragment) | CYTH1 | K7ENQ8 | 1 |