| Poliovirus receptor related 2 (Fragment) | PVRL2 | Q7Z456 | 3 |
| Poliovirus receptor related 2 (Fragment) | PVRL2 | Q7Z458 | 3 |
| Poly [ADP-ribose] polymerase (PARP) (EC 2.4.2.30) | 0 | B4E2S2 | 3 |
| Poly [ADP-ribose] polymerase 15 (PARP-15) (EC 2.4.2.30) (ADP-ribosyltransferase diphtheria toxin-like 7) (ARTD7) (B-aggressive lymphoma protein 3) | PARP15 BAL3 | Q460N3 | 3 |
| Poly(A) polymerase beta (PAP-beta) (EC 2.7.7.19) (Polynucleotide adenylyltransferase beta) (Testis-specific poly(A) polymerase) | PAPOLB PAPT | Q9NRJ5 | 3 |
| Polyadenylate-binding protein (PABP) | PABPC1 | A0A087WTT1 | 3 |
| Polycystic kidney disease 2-like 2 protein (Polycystin-2L2) (Polycystin-L2) | PKD2L2 | Q9NZM6 | 3 |
| Polyhomeotic-like protein 3 (Early development regulatory protein 3) (Homolog of polyhomeotic 3) (hPH3) | PHC3 EDR3 PH3 | Q8NDX5 | 3 |
| Polypeptide N-acetylgalactosaminyltransferase (EC 2.4.1.-) (Protein-UDP acetylgalactosaminyltransferase) | 0 | A8KAJ7 | 3 |
| Polypeptide N-acetylgalactosaminyltransferase (EC 2.4.1.-) (Protein-UDP acetylgalactosaminyltransferase) | GALNT6 | Q24JS2 | 3 |
| Polypeptide N-acetylgalactosaminyltransferase 3 (Fragment) | GALNT3 | C9J2C3 | 3 |
| Polypeptide N-acetylgalactosaminyltransferase 4 (EC 2.4.1.41) (Polypeptide GalNAc transferase 4) (GalNAc-T4) (pp-GaNTase 4) (Protein-UDP acetylgalactosaminyltransferase 4) (UDP-GalNAc:polypeptide N-acetylgalactosaminyltransferase 4) | GALNT4 | Q8N4A0 | 3 |
| Polyphosphoinositide phosphatase (EC 3.1.3.-) (Phosphatidylinositol 3,5-bisphosphate 5-phosphatase) (SAC domain-containing protein 3) | FIG4 KIAA0274 SAC3 | Q92562 | 3 |
| Polyubiquitin-C (UBC protein) | UBC | Q96C32 | 3 |
| Postacrosomal sheath WW domain-binding protein (WW domain-binding protein 2-like) | WBP2NL PAWP | Q6ICG8 | 3 |
| Potassium channel subfamily K member 1 (Fragment) | KCNK1 | Q5T5E6 | 3 |
| Potassium channel subfamily K member 13 (Tandem pore domain halothane-inhibited potassium channel 1) (THIK-1) | KCNK13 | Q9HB14 | 3 |
| Potassium voltage-gated channel subfamily A member 6 (Voltage-gated potassium channel HBK2) (Voltage-gated potassium channel subunit Kv1.6) | KCNA6 | P17658 | 3 |
| Potassium voltage-gated channel subfamily H member 4 (Brain-specific eag-like channel 2) (BEC2) (Ether-a-go-go-like potassium channel 1) (ELK channel 1) (ELK1) (Voltage-gated potassium channel subunit Kv12.3) | KCNH4 | Q9UQ05 | 3 |
| Potassium voltage-gated channel subfamily H member 7 (Ether-a-go-go-related gene potassium channel 3) (ERG-3) (Eag-related protein 3) (Ether-a-go-go-related protein 3) (hERG-3) (Voltage-gated potassium channel subunit Kv11.3) | KCNH7 ERG3 | Q9NS40 | 3 |
| Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1 (Brain cyclic nucleotide-gated channel 1) (BCNG-1) | HCN1 BCNG1 | O60741 | 3 |
| PPP2R5E protein (Fragment) | PPP2R5E | Q58EX4 | 3 |
| PR domain zinc finger protein 13 (EC 2.1.1.-) (PR domain-containing protein 13) | PRDM13 PFM10 | Q9H4Q3 | 3 |
| Pre-mRNA-splicing factor CWC22 homolog (Fragment) | CWC22 | B7WP74 | 3 |
| Prefoldin subunit 1 | PFDN1 | E5RGS4 | 3 |
| Pregnancy-specific beta-1-glycoprotein 3 (PS-beta-G-3) (PSBG-3) (Pregnancy-specific glycoprotein 3) (Carcinoembryonic antigen SG5) | PSG3 | Q16557 | 3 |
| Pregnancy-specific beta-1-glycoprotein 5 (PS-beta-G-5) (PSBG-5) (Pregnancy-specific glycoprotein 5) (Fetal liver non-specific cross-reactive antigen 3) (FL-NCA-3) | PSG5 | Q15238 | 3 |
| Prelamin-A/C (Fragment) | LMNA | H0YAB0 | 3 |
| Prenylcysteine oxidase 1 | PCYOX1 | F8W8W4 | 3 |
| Presenilin (EC 3.4.23.-) | PSEN1 | E7ES96 | 3 |
| Pro-cathepsin H (Fragment) | CTSH | E9PKT6 | 3 |
| Probable 2-oxoglutarate dehydrogenase E1 component DHKTD1, mitochondrial (EC 1.2.4.2) (Dehydrogenase E1 and transketolase domain-containing protein 1) | DHTKD1 KIAA1630 | Q96HY7 | 3 |
| Probable ATP-dependent RNA helicase DDX28 (EC 3.6.4.13) (Mitochondrial DEAD box protein 28) | DDX28 MDDX28 | Q9NUL7 | 3 |
| Probable ATP-dependent RNA helicase DDX4 (EC 3.6.4.13) (DEAD box protein 4) (Vasa homolog) | DDX4 VASA | Q9NQI0 | 3 |
| Probable ATP-dependent RNA helicase DDX43 (EC 3.6.4.13) (Cancer/testis antigen 13) (CT13) (DEAD box protein 43) (DEAD box protein HAGE) (Helical antigen) | DDX43 HAGE | Q9NXZ2 | 3 |
| Probable ATP-dependent RNA helicase DDX56 (Fragment) | DDX56 | H7C3E9 | 3 |
| Probable ATP-dependent RNA helicase DDX59 (EC 3.6.4.13) (DEAD box protein 59) (Zinc finger HIT domain-containing protein 5) | DDX59 ZNHIT5 | Q5T1V6 | 3 |
| Probable ATP-dependent RNA helicase YTHDC2 | YTHDC2 | D6RA70 | 3 |
| Probable E3 ubiquitin-protein ligase DTX3 (EC 2.3.2.27) (Protein deltex-3) (Deltex3) (RING finger protein 154) (RING-type E3 ubiquitin transferase DTX3) | DTX3 RNF154 | Q8N9I9 | 3 |
| Probable G-protein coupled receptor 150 | GPR150 | Q8NGU9 | 3 |
| Probable G-protein coupled receptor 158 | GPR158 KIAA1136 | Q5T848 | 3 |
| Probable leucine--tRNA ligase, mitochondrial | LARS2 | E9PHM2 | 3 |
| Probable phospholipid-transporting ATPase VD (EC 3.6.3.1) (ATPase class V type 10D) (P4-ATPase flippase complex alpha subunit ATP10D) | ATP10D ATPVD KIAA1487 | Q9P241 | 3 |
| Processing of 1, ribonuclease P/MRP subunit (S. cerevisiae) | POP1 | Q96F88 | 3 |
| Procollagen-lysine,2-oxoglutarate 5-dioxygenase 2 | PLOD2 | E7ETU9 | 3 |
| Procollagen-lysine,2-oxoglutarate 5-dioxygenase 3 (Fragment) | PLOD3 | H7C0B8 | 3 |
| Proenkephalin-B (Beta-neoendorphin-dynorphin) (Preprodynorphin) [Cleaved into: Alpha-neoendorphin; Beta-neoendorphin; Big dynorphin (Big Dyn); Dynorphin A(1-17) (Dyn-A17) (Dynorphin A); Dynorphin A(1-13); Dynorphin A(1-8); Leu-enkephalin; Rimorphin (Dynorphin B) (Dyn-B) (Dynorphin B(1-13)); Leumorphin (Dynorphin B-29)] | PDYN | P01213 | 3 |
| Profilaggrin (Fragment) | 0 | Q05331 | 3 |
| Profilin | PFN2 | C9J0J7 | 3 |
| Programmed cell death 10, isoform CRA_b (Programmed cell death protein 10) | PDCD10 hCG_27561 | C9J363 | 3 |
| Programmed cell death 6-interacting protein (PDCD6-interacting protein) (ALG-2-interacting protein 1) (ALG-2-interacting protein X) (Hp95) | PDCD6IP AIP1 ALIX KIAA1375 | C5MQH7 | 3 |
| Programmed cell death 6-interacting protein (PDCD6-interacting protein) (ALG-2-interacting protein 1) (ALG-2-interacting protein X) (Hp95) | PDCD6IP AIP1 ALIX KIAA1375 | E9PFU1 | 3 |
| Programmed cell death protein 6 (Apoptosis-linked gene 2 protein homolog) (ALG-2) | PDCD6 ALG2 | Q2YDC2 | 3 |
| Prohibitin variant (Fragment) | 0 | Q53FV0 | 3 |
| Proline-rich protein 12 | PRR12 KIAA1205 | Q9ULL5 | 3 |
| Proline-rich protein 5-like (Protein observed with Rictor-2) (Protor-2) | PRR5L PROTOR2 | Q6MZQ0 | 3 |
| Proline-rich protein 7 (Synaptic proline-rich membrane protein) | PRR7 | Q8TB68 | 3 |
| Proline-rich transmembrane protein 2 (Dispanin subfamily B member 3) (DSPB3) | PRRT2 | Q7Z6L0 | 3 |
| Prolyl endopeptidase FAP (cDNA FLJ60298, highly similar to Seprase (EC 3.4.21.-)) | FAP | B4DLR2 | 3 |
| Prominin-2 | PROM2 | F8WDW5 | 3 |
| Prostaglandin E2 receptor EP4 subtype (PGE receptor EP4 subtype) (PGE2 receptor EP4 subtype) (Prostanoid EP4 receptor) | PTGER4 PTGER2 | P35408 | 3 |
| Prostaglandin reductase 1 | PTGR1 | F6XGT7 | 3 |
| Prostate-specific transglutaminase 4 (EC 2.3.2.13) | TGM4 | B4YUQ1 | 3 |
| Prostatic acid phosphatase (Fragment) | ACPP | E9PFE6 | 3 |
| Proteasome activator complex subunit 2 | PSME2 | H0YM70 | 3 |
| Proteasome subunit alpha type (EC 3.4.25.1) (Fragment) | PSMA4 | H0YMZ1 | 3 |
| Proteasome subunit alpha type-2 (Fragment) | PSMA2 | H7C402 | 3 |
| Proteasome subunit beta type (EC 3.4.25.1) (Fragment) | PSMB7 | Q5TBG5 | 3 |
| Proteasome subunit beta type-10 (Fragment) | PSMB10 | J3QQN1 | 3 |
| Protein ABHD14B | ABHD14B | F8W9U3 | 3 |
| Protein arginine N-methyltransferase 5 (Fragment) | PRMT5 | G3V580 | 3 |
| Protein arginine N-methyltransferase 5 (Fragment) | PRMT5 | G3V5L5 | 3 |
| Protein arginine N-methyltransferase 7 (EC 2.1.1.321) (Histone-arginine N-methyltransferase PRMT7) ([Myelin basic protein]-arginine N-methyltransferase PRMT7) | PRMT7 KIAA1933 | Q9NVM4 | 3 |
| Protein asunder homolog (Cell cycle regulator Mat89Bb homolog) (Germ cell tumor 1) (Sarcoma antigen NY-SAR-95) | ASUN C12orf11 GCT1 | Q9NVM9 | 3 |
| Protein bicaudal D homolog 1 (Bic-D 1) | BICD1 | Q96G01 | 3 |
| Protein C19orf12 | C19orf12 | Q9NSK7 | 3 |
| Protein C21orf2 (C21orf-HUMF09G8.5) (Leucine-rich repeat-containing protein 76) (YF5/A2) | C21orf2 LRRC76 | O43822 | 3 |
| Protein cordon-bleu (Fragment) | COBL | J3KR05 | 3 |
| Protein delta homolog 1 (DLK-1) (pG2) [Cleaved into: Fetal antigen 1 (FA1)] | DLK1 DLK | P80370 | 3 |
| Protein dispatched homolog 1 | DISP1 DISPA | Q96F81 | 3 |
| Protein disulfide-isomerase | P4HB | H7BZ94 | 3 |
| Protein dopey-1 | DOPEY1 KIAA1117 | Q5JWR5 | 3 |
| Protein ecdysoneless homolog (Human suppressor of GCR two) (hSGT1) | ECD | O95905 | 3 |
| Protein EFR3 homolog B | EFR3B KIAA0953 | Q9Y2G0 | 3 |
| Protein ENL (YEATS domain-containing protein 1) | MLLT1 ENL LTG19 YEATS1 | Q03111 | 3 |
| Protein FAM186B | FAM186B C12orf25 | Q8IYM0 | 3 |
| Protein FAM192A (NEFA-interacting nuclear protein NIP30) | FAM192A C16orf94 NIP30 CDA018 CDA10 | Q9GZU8 | 3 |
| Protein FAM3A (Cytokine-like protein 2-19) | FAM3A 2-19 2.19 | P98173 | 3 |
| Protein FAM76B | FAM76B | F5GX09 | 3 |
| Protein FAM81A | FAM81A | Q8TBF8 | 3 |
| Protein FAM83B | FAM83B C6orf143 | Q5T0W9 | 3 |
| Protein FAM98A (Fragment) | FAM98A | C9J3G8 | 3 |
| Protein FAM98C | FAM98C | Q17RN3 | 3 |
| Protein FAN (Factor associated with neutral sphingomyelinase activation) (Factor associated with N-SMase activation) | NSMAF FAN | Q92636 | 3 |
| Protein farnesyltransferase/geranylgeranyltransferase type-1 subunit alpha (Fragment) | FNTA | E9PPM9 | 3 |
| Protein furry homolog | FRY C13orf14 | Q5TBA9 | 3 |
| Protein KIAA0556 | KIAA0556 | O60303 | 3 |
| Protein kinase C (EC 2.7.11.13) | 0 | B2RCZ4 | 3 |
| Protein kinase C and casein kinase substrate in neurons protein 3 (Fragment) | PACSIN3 | E9PJ33 | 3 |
| Protein kinase C delta-binding protein | PRKCDBP | E9PIE3 | 3 |