| Nucleoporin-like protein 2 (NLP-1) (NUP42 homolog) (Nucleoporin hCG1) | NUPL2 CG1 | O15504 | 3 |
| Nucleoside diphosphate kinase 7 (NDK 7) (NDP kinase 7) (EC 2.7.4.6) (nm23-H7) | NME7 | Q9Y5B8 | 3 |
| NudC domain-containing protein 2 | NUDCD2 | Q8WVJ2 | 3 |
| Numb-like protein (Numb-related protein) (Numb-R) | NUMBL | Q9Y6R0 | 3 |
| Olfactomedin-4 (OLM4) (Antiapoptotic protein GW112) (G-CSF-stimulated clone 1 protein) (hGC-1) (hOLfD) | OLFM4 GW112 UNQ362/PRO698 | Q6UX06 | 3 |
| Olfactory receptor 10G9 (Olfactory receptor 10G10) | OR10G9 OR10G10P | Q8NGN4 | 3 |
| Olfactory receptor 10H5 (Olfactory receptor OR19-25) (Olfactory receptor OR19-26) | OR10H5 | Q8NGA6 | 3 |
| Olfactory receptor 1M1 (Olfactory receptor 19-6) (OR19-6) (Olfactory receptor OR19-5) | OR1M1 | Q8NGA1 | 3 |
| Olfactory receptor 2L8 (Olfactory receptor OR1-46) | OR2L8 | Q8NGY9 | 3 |
| Olfactory receptor 2T3 | OR2T3 | Q8NH03 | 3 |
| Olfactory receptor 2T33 (Olfactory receptor OR1-56) | OR2T33 | Q8NG76 | 3 |
| Olfactory receptor 4D10 (Olfactory receptor OR11-251) | OR4D10 OR4D10P | Q8NGI6 | 3 |
| Olfactory receptor 4N4 (Olfactory receptor OR15-1) (Olfactory receptor OR15-5) | OR4N4 | Q8N0Y3 | 3 |
| Olfactory receptor 52W1 (Olfactory receptor OR11-71) | OR52W1 OR52W1P | Q6IF63 | 3 |
| Oligoribonuclease, mitochondrial (EC 3.1.-.-) (RNA exonuclease 2 homolog) (Small fragment nuclease) | REXO2 SFN SMFN CGI-114 | Q9Y3B8 | 3 |
| Opioid-binding protein/cell adhesion molecule (OBCAM) (OPCML) (Opioid-binding cell adhesion molecule) (IgLON family member 1) | OPCML IGLON1 OBCAM | Q14982 | 3 |
| Optic atrophy 3 protein | OPA3 | Q9H6K4 | 3 |
| Orexin (Hypocretin) (Hcrt) [Cleaved into: Orexin-A (Hypocretin-1) (Hcrt1); Orexin-B (Hypocretin-2) (Hcrt2)] | HCRT OX PPORX PPOX | O43612 | 3 |
| ORM1-like protein 1 (Adoplin-1) | ORMDL1 HSPC202 | Q9P0S3 | 3 |
| Otoancorin | OTOA | Q7RTW8 | 3 |
| Outer dense fiber protein 2-like | ODF2L KIAA1229 | Q9ULJ1 | 3 |
| Oxidase (Cytochrome c) assembly 1-like | OXA1L | Q2M1J6 | 3 |
| Oxidation resistance protein 1 | OXR1 Nbla00307 | Q8N573 | 3 |
| Oxidative stress-induced growth inhibitor 2 (hT41) | OSGIN2 C8orf1 | Q9Y236 | 3 |
| Oxidative stress-responsive serine-rich protein 1 (Oxidative stress-responsive protein 1) (Peroxide-inducible transcript 1 protein) | OSER1 BM-038 C20orf111 HSPC168 HSPC207 | Q9NX31 | 3 |
| Oxysterol-binding protein-related protein 3 (ORP-3) (OSBP-related protein 3) | OSBPL3 KIAA0704 ORP3 OSBP3 | Q9H4L5 | 3 |
| Oxysterols receptor LXR-alpha (Liver X receptor alpha) (Nuclear receptor subfamily 1 group H member 3) | NR1H3 LXRA | Q13133 | 3 |
| P2X purinoceptor 2 (P2X2) (ATP receptor) (Purinergic receptor) | P2RX2 P2X2 | Q9UBL9 | 3 |
| P2Y purinoceptor 11 (P2Y11) | P2RY11 | Q96G91 | 3 |
| P2Y purinoceptor 13 (P2Y13) (G-protein coupled receptor 86) (G-protein coupled receptor 94) | P2RY13 GPR86 GPR94 FKSG77 | Q9BPV8 | 3 |
| P2Y purinoceptor 2 (P2Y2) (ATP receptor) (P2U purinoceptor 1) (P2U1) (P2U receptor 1) (Purinergic receptor) | P2RY2 P2RU1 | P41231 | 3 |
| P2Y purinoceptor 6 (P2Y6) | P2RY6 PP2891 | Q15077 | 3 |
| PACRG-like protein | PACRGL C4orf28 | Q8N7B6 | 3 |
| Paired amphipathic helix protein Sin3b (Histone deacetylase complex subunit Sin3b) (Transcriptional corepressor Sin3b) | SIN3B KIAA0700 | O75182 | 3 |
| Paired mesoderm homeobox protein 1 (Homeobox protein PHOX1) (Paired-related homeobox protein 1) (PRX-1) | PRRX1 PMX1 | P54821 | 3 |
| Palmitoyltransferase ZDHHC22 (EC 2.3.1.225) (Zinc finger DHHC domain-containing protein 22) (DHHC-22) (zDHHC22) | ZDHHC22 C14orf59 | Q8N966 | 3 |
| Palmitoyltransferase ZDHHC6 (EC 2.3.1.225) (Transmembrane protein H4) (Zinc finger DHHC domain-containing protein 6) (DHHC-6) (Zinc finger protein 376) | ZDHHC6 ZNF376 | Q9H6R6 | 3 |
| Pancreas/duodenum homeobox protein 1 (PDX-1) (Glucose-sensitive factor) (GSF) (Insulin promoter factor 1) (IPF-1) (Insulin upstream factor 1) (IUF-1) (Islet/duodenum homeobox-1) (IDX-1) (Somatostatin-transactivating factor 1) (STF-1) | PDX1 IPF1 STF1 | P52945 | 3 |
| Pannexin-1 | PANX1 MRS1 UNQ2529/PRO6028 | Q96RD7 | 3 |
| PAP-associated domain-containing protein 5 (EC 2.7.7.-) (Terminal uridylyltransferase 3) (TUTase 3) (Topoisomerase-related function protein 4-2) (TRF4-2) | PAPD5 | Q8NDF8 | 3 |
| Papillary renal cell carcinoma (Translocation-associated) | PRCC | Q96FT4 | 3 |
| Paralemmin-3 | PALM3 | A6NDB9 | 3 |
| Paraneoplastic antigen MA2 | PNMA2 | Q5U5Z3 | 3 |
| Parathyroid hormone/parathyroid hormone-related peptide receptor (PTH/PTHrP type I receptor) (PTH/PTHr receptor) (Parathyroid hormone 1 receptor) (PTH1 receptor) | PTH1R PTHR PTHR1 | Q03431 | 3 |
| Parvalbumin alpha | PVALB | P20472 | 3 |
| PAX-interacting protein 1 (PAX transactivation activation domain-interacting protein) | PAXIP1 PAXIP1L PTIP CAGF28 | Q6ZW49 | 3 |
| PCTP-like protein (PCTP-L) (Antigen NY-CO-28) (START domain-containing protein 10) (StARD10) (Serologically defined colon cancer antigen 28) (StAR-related lipid transfer protein 10) | STARD10 SDCCAG28 CGI-52 | Q9Y365 | 3 |
| PDZ domain-containing protein GIPC2 | GIPC2 | Q8TF65 | 3 |
| PDZK1-interacting protein 1 (17 kDa membrane-associated protein) (Protein DD96) | PDZK1IP1 MAP17 | Q13113 | 3 |
| Pecanex-like protein 2 | PCNXL2 KIAA0435 | A6NKB5 | 3 |
| Peflin (PEF protein with a long N-terminal hydrophobic domain) (Penta-EF hand domain-containing protein 1) | PEF1 ABP32 UNQ1845/PRO3573 | Q9UBV8 | 3 |
| Pentraxin-4 | PTX4 C16orf38 | Q96A99 | 3 |
| Peptidyl-prolyl cis-trans isomerase A-like 4G (PPIase A-like 4G) (EC 5.2.1.8) (Peptidylprolyl cis-trans isomerase A-like 4) | PPIAL4G | A2BFH1 | 3 |
| Peptidyl-prolyl cis-trans isomerase H (PPIase H) (EC 5.2.1.8) (Rotamase H) (Small nuclear ribonucleoprotein particle-specific cyclophilin H) (CypH) (U-snRNP-associated cyclophilin SnuCyp-20) (USA-CYP) | PPIH CYP20 CYPH | O43447 | 3 |
| Peptidyl-tRNA hydrolase 2, mitochondrial (PTH 2) (EC 3.1.1.29) (Bcl-2 inhibitor of transcription 1) | PTRH2 BIT1 PTH2 CGI-147 | Q9Y3E5 | 3 |
| Peptidyl-tRNA hydrolase ICT1, mitochondrial (EC 3.1.1.29) (39S ribosomal protein L58, mitochondrial) (MRP-L58) (Digestion substraction 1) (DS-1) (Immature colon carcinoma transcript 1 protein) | ICT1 DS1 | Q14197 | 3 |
| Periaxin | PRX KIAA1620 | Q9BXM0 | 3 |
| Periplakin (190 kDa paraneoplastic pemphigus antigen) (195 kDa cornified envelope precursor protein) | PPL KIAA0568 | O60437 | 3 |
| Peroxisomal membrane protein PEX14 (PTS1 receptor-docking protein) (Peroxin-14) (Peroxisomal membrane anchor protein PEX14) | PEX14 | O75381 | 3 |
| Peroxisomal N(1)-acetyl-spermine/spermidine oxidase (EC 1.5.3.13) (Polyamine oxidase) | PAOX PAO UNQ1923/PRO4398 | Q6QHF9 | 3 |
| Peroxisomal targeting signal 2 receptor (PTS2 receptor) (Peroxin-7) | PEX7 PTS2R | O00628 | 3 |
| Peroxisome biogenesis factor 1 (Peroxin-1) (Peroxisome biogenesis disorder protein 1) | PEX1 | O43933 | 3 |
| Peroxisome biogenesis factor 10 (Peroxin-10) (Peroxisomal biogenesis factor 10) (Peroxisome assembly protein 10) (RING finger protein 69) | PEX10 RNF69 | O60683 | 3 |
| Peroxisome biogenesis factor 2 (35 kDa peroxisomal membrane protein) (Peroxin-2) (Peroxisomal membrane protein 3) (Peroxisome assembly factor 1) (PAF-1) (RING finger protein 72) | PEX2 PAF1 PMP3 PMP35 PXMP3 RNF72 | P28328 | 3 |
| Pescadillo homolog | PES1 | O00541 | 3 |
| Pescadillo homolog 1 (Pescadillo homolog 1, containing BRCT domain (Zebrafish), isoform CRA_a) (cDNA, FLJ96584, Homo sapiens pescadillo homolog 1, containing BRCT domain(zebrafish) (PES1), mRNA) | PES1 hCG_2010949 | B2RDF2 | 3 |
| PFAS protein (Fragment) | PFAS | Q6P4B4 | 3 |
| PH and SEC7 domain-containing protein 4 (Exchange factor for ADP-ribosylation factor guanine nucleotide factor 6 B) (Exchange factor for ARF6 B) (Pleckstrin homology and SEC7 domain-containing protein 4) (Telomeric of interleukin-1 cluster protein) | PSD4 EFA6B TIC | Q8NDX1 | 3 |
| PHD finger protein 12 (PHD factor 1) (Pf1) | PHF12 KIAA1523 | Q96QT6 | 3 |
| PHD finger protein 13 (Survival time-associated PHD finger protein in ovarian cancer 1) (SPOC1) | PHF13 | Q86YI8 | 3 |
| PHD finger-like domain-containing protein 5A (PHD finger-like domain protein 5A) (Splicing factor 3B-associated 14 kDa protein) (SF3b14b) | PHF5A | Q7RTV0 | 3 |
| Phorbol-12-myristate-13-acetate-induced protein 1 (PMA-induced protein 1) (Immediate-early-response protein APR) (Protein Noxa) | PMAIP1 NOXA | Q13794 | 3 |
| Phosphatase and actin regulator 4 | PHACTR4 PRO2963 | Q8IZ21 | 3 |
| Phosphatidate cytidylyltransferase 2 (EC 2.7.7.41) (CDP-DAG synthase 2) (CDP-DG synthase 2) (CDP-diacylglycerol synthase 2) (CDS 2) (CDP-diglyceride pyrophosphorylase 2) (CDP-diglyceride synthase 2) (CTP:phosphatidate cytidylyltransferase 2) | CDS2 | O95674 | 3 |
| Phosphatidylethanolamine-binding protein 1 | 0 | D9IAI1 | 3 |
| Phosphatidylinositol 4,5-bisphosphate 5-phosphatase A (EC 3.1.3.56) (Inositol polyphosphate 5-phosphatase J) | INPP5J PIB5PA PIPP | Q15735 | 3 |
| Phosphatidylinositol 4-kinase type 2-alpha (EC 2.7.1.67) (Phosphatidylinositol 4-kinase type II-alpha) | PI4K2A | Q9BTU6 | 3 |
| Phosphatidylinositol 4-kinase type 2-beta (EC 2.7.1.67) (Phosphatidylinositol 4-kinase type II-beta) (PI4KII-BETA) | PI4K2B | Q8TCG2 | 3 |
| Phosphatidylinositol N-acetylglucosaminyltransferase subunit C (EC 2.4.1.198) (Phosphatidylinositol-glycan biosynthesis class C protein) (PIG-C) | PIGC GPI2 | Q92535 | 3 |
| Phosphatidylinositol N-acetylglucosaminyltransferase subunit Q (EC 2.4.1.198) (N-acetylglucosamyl transferase component GPI1) (Phosphatidylinositol-glycan biosynthesis class Q protein) (PIG-Q) | PIGQ GPI1 | Q9BRB3 | 3 |
| Phosphatidylinositol-glycan biosynthesis class W protein (PIG-W) (EC 2.3.-.-) | PIGW | Q7Z7B1 | 3 |
| Phosphomannomutase 2 (PMM 2) (EC 5.4.2.8) | PMM2 | O15305 | 3 |
| Phosphoribosyl pyrophosphate amidotransferase proprotein variant (Fragment) | 0 | Q59G63 | 3 |
| Photoreceptor-specific nuclear receptor (Nuclear receptor subfamily 2 group E member 3) (Retina-specific nuclear receptor) | NR2E3 PNR RNR | Q9Y5X4 | 3 |
| Pirin (EC 1.13.11.24) (Probable quercetin 2,3-dioxygenase PIR) (Probable quercetinase) | PIR | O00625 | 3 |
| Placenta copper monamine oxidase (Fragment) | 0 | Q9UEU7 | 3 |
| Plakophilin-2 | PKP2 | Q99959 | 3 |
| Plasma membrane calcium-transporting ATPase 3 (PMCA3) (EC 3.6.3.8) (Plasma membrane calcium ATPase isoform 3) (Plasma membrane calcium pump isoform 3) | ATP2B3 | Q16720 | 3 |
| Plasminogen (EC 3.4.21.7) [Cleaved into: Plasmin heavy chain A; Activation peptide; Angiostatin; Plasmin heavy chain A, short form; Plasmin light chain B] | PLG | P00747 | 3 |
| Platelet glycoprotein Ib beta chain (GP-Ib beta) (GPIb-beta) (GPIbB) (Antigen CD42b-beta) (CD antigen CD42c) | GP1BB | P13224 | 3 |
| Platelet-activating factor acetylhydrolase 2, cytoplasmic (EC 3.1.1.47) (Serine-dependent phospholipase A2) (SD-PLA2) (hSD-PLA2) | PAFAH2 | Q99487 | 3 |
| Pleckstrin (Platelet 47 kDa protein) (p47) | PLEK P47 | P08567 | 3 |
| Pleckstrin homology domain-containing family A member 5 (PH domain-containing family A member 5) (Phosphoinositol 3-phosphate-binding protein 2) (PEPP-2) | PLEKHA5 KIAA1686 PEPP2 | Q9HAU0 | 3 |
| Pleckstrin homology domain-containing family A member 6 (PH domain-containing family A member 6) (Phosphoinositol 3-phosphate-binding protein 3) (PEPP-3) | PLEKHA6 KIAA0969 PEPP3 | Q9Y2H5 | 3 |
| Pleckstrin homology domain-containing family F member 1 (PH domain-containing family F member 1) (Lysosome-associated apoptosis-inducing protein containing PH and FYVE domains) (Apoptosis-inducing protein) (PH and FYVE domain-containing protein 1) (Phafin-1) (Zinc finger FYVE domain-containing protein 15) | PLEKHF1 APPD LAPF ZFYVE15 | Q96S99 | 3 |
| Pleckstrin homology domain-containing family G member 3 (PH domain-containing family G member 3) | PLEKHG3 KIAA0599 | A1L390 | 3 |
| Pleckstrin homology domain-containing family G member 5 (PH domain-containing family G member 5) (Guanine nucleotide exchange factor 720) (GEF720) | PLEKHG5 KIAA0720 | O94827 | 3 |
| Pleckstrin homology domain-containing family J member 1 (PH domain-containing family J member 1) (Guanine nucleotide-releasing protein x) | PLEKHJ1 GNRPX | Q9NW61 | 3 |
| Pleckstrin homology domain-containing family M member 2 (PH domain-containing family M member 2) (Salmonella-induced filaments A and kinesin-interacting protein) (SifA and kinesin-interacting protein) | PLEKHM2 KIAA0842 SKIP | Q8IWE5 | 3 |
| Pleckstrin homology-like domain family B member 3 | PHLDB3 | Q6NSJ2 | 3 |