| Mitochondrial amidoxime reducing component 2 (mARC2) (EC 1.-.-.-) (Molybdenum cofactor sulfurase C-terminal domain-containing protein 2) (MOSC domain-containing protein 2) (Moco sulfurase C-terminal domain-containing protein 2) | Marc2 Mg87 Mosc2 | Q922Q1 | 3 |
| Mitochondrial dicarboxylate carrier (Solute carrier family 25 member 10) | Slc25a10 Dic | Q9QZD8 | 3 |
| Mitochondrial import inner membrane translocase subunit Tim13 | Timm13 Tim13a Timm13a | P62075 | 3 |
| Mitochondrial import receptor subunit TOM70 (Mitochondrial precursor proteins import receptor) (Translocase of outer membrane 70 kDa subunit) (Translocase of outer mitochondrial membrane protein 70) | Tomm70 D16Wsu109e Tomm70a | Q9CZW5 | 3 |
| Mitochondrial pyruvate carrier 2 (Brain protein 44) | Mpc2 Brp44 | Q9D023 | 3 |
| Mitochondrial ribosome-associated GTPase 1 (GTP-binding protein 7) (Mitochondrial GTPase 1) | Mtg1 Gm169 Gtpbp7 | Q8R2R6 | 3 |
| Mitofusin-2 (EC 3.6.5.-) (Hypertension-related protein 1) (Mitochondrial assembly regulatory factor) (HSG protein) (Transmembrane GTPase MFN2) | Mfn2 Kiaa0214 Marf | Q80U63 | 3 |
| Mitogen-activated protein kinase 15 (MAP kinase 15) (MAPK 15) (EC 2.7.11.24) (Extracellular signal-regulated kinase 7) (ERK-7) | Mapk15 Erk7 | Q80Y86 | 3 |
| Mitogen-activated protein kinase 8 (MAP kinase 8) (MAPK 8) (EC 2.7.11.24) (Stress-activated protein kinase JNK1) (c-Jun N-terminal kinase 1) | Mapk8 Jnk1 Prkm8 | Q91Y86 | 3 |
| Mitogen-activated protein kinase kinase kinase 20 (EC 2.7.11.25) (Human cervical cancer suppressor gene 4 protein) (HCCS-4) (Leucine zipper- and sterile alpha motif kinase ZAK) (Leucine zipper- and sterile alpha motif-containing kinase) (MLK-like mitogen-activated protein triple kinase) (Mitogen-activated protein kinase kinase kinase MLT) (Mixed lineage kinase-related kinase) (MLK-related kinase) (MRK) (Sterile alpha motif- and leucine zipper-containing kinase AZK) | Map3k20 Mltk Zak | Q9ESL4 | 3 |
| Mitogen-activated protein kinase kinase kinase 5 (EC 2.7.11.25) (Apoptosis signal-regulating kinase 1) (ASK-1) (MAPK/ERK kinase kinase 5) (MEK kinase 5) (MEKK 5) | Map3k5 Ask1 Mekk5 | O35099 | 3 |
| Mitogen-activated protein kinase kinase kinase kinase 1 (EC 2.7.11.1) (Hematopoietic progenitor kinase) (HPK) (MAPK/ERK kinase kinase kinase 1) (MEK kinase kinase 1) (MEKKK 1) | Map4k1 Hpk1 | P70218 | 3 |
| Mitogen-activated protein kinase kinase kinase kinase 3 (EC 2.7.11.1) (Germinal center kinase-related protein kinase) (GLK) (MAPK/ERK kinase kinase kinase 3) (MEK kinase kinase 3) (MEKKK 3) | Map4k3 | Q99JP0 | 3 |
| Mitotic checkpoint serine/threonine-protein kinase BUB1 beta (EC 2.7.11.1) (MAD3/BUB1-related protein kinase) (BubR1) (Mitotic checkpoint kinase MAD3L) | Bub1b Mad3l | Q9Z1S0 | 3 |
| Mothers against decapentaplegic homolog 1 (MAD homolog 1) (Mothers against DPP homolog 1) (Dwarfin-A) (Dwf-A) (Mothers-against-DPP-related 1) (Mad-related protein 1) (mMad1) (SMAD family member 1) (SMAD 1) (Smad1) | Smad1 Madh1 Madr1 | P70340 | 3 |
| Mothers against decapentaplegic homolog 9 (MAD homolog 9) (Mothers against DPP homolog 9) (SMAD family member 9) (SMAD 9) (Smad9) (Smad8) | Smad9 Madh8 Madh9 Smad8 | Q9JIW5 | 3 |
| mRNA cap guanine-N7 methyltransferase (EC 2.1.1.56) (RG7MT1) (mRNA (guanine-N(7)-)-methyltransferase) (mRNA cap methyltransferase) | Rnmt Kiaa0398 | Q9D0L8 | 3 |
| Mucin-1 (MUC-1) (Episialin) (CD antigen CD227) [Cleaved into: Mucin-1 subunit alpha (MUC1-NT) (MUC1-alpha); Mucin-1 subunit beta (MUC1-beta) (MUC1-CT)] | Muc1 Muc-1 | Q02496 | 3 |
| Mucin-4 (MUC-4) (Ascites sialoglycoprotein) (ASGP) (Pancreatic adenocarcinoma mucin) (Testis mucin) [Cleaved into: Mucin-4 alpha chain (Ascites sialoglycoprotein 1) (ASGP-1); Mucin-4 beta chain (Ascites sialoglycoprotein 2) (ASGP-2)] | Muc4 | Q8JZM8 | 3 |
| Mucolipin-2 | Mcoln2 | Q8K595 | 3 |
| Multiple epidermal growth factor-like domains protein 10 (Multiple EGF-like domains protein 10) | Megf10 | Q6DIB5 | 3 |
| Multiple epidermal growth factor-like domains protein 8 (Multiple EGF-like domains protein 8) (Epidermal growth factor-like protein 4) (EGF-like protein 4) | Megf8 Egfl4 | P60882 | 3 |
| Multiple inositol polyphosphate phosphatase 1 (EC 3.1.3.62) (2,3-bisphosphoglycerate 3-phosphatase) (2,3-BPG phosphatase) (EC 3.1.3.80) (Inositol (1,3,4,5)-tetrakisphosphate 3-phosphatase) (Ins(1,3,4,5)P(4) 3-phosphatase) | Minpp1 Mipp MNCb-1572 | Q9Z2L6 | 3 |
| Muscleblind-like 1 (Drosophila), isoform CRA_a (Muscleblind-like protein 1) | Mbnl1 mCG_19416 | G3X9Q0 | 3 |
| Muscleblind-like protein 1 (Triplet-expansion RNA-binding protein) | Mbnl1 Exp Mbnl | Q9JKP5 | 3 |
| Myeloid cell nuclear differentiation antigen-like protein | Mndal | D0QMC3 | 3 |
| Myosin light chain kinase 3 (EC 2.7.11.18) (Cardiac-MyBP-C-associated Ca/CaM kinase) (Cardiac-MLCK) | Mylk3 | Q3UIZ8 | 3 |
| Myosin phosphatase Rho-interacting protein (Fragment) | Mprip | F6S5I0 | 3 |
| Myosin-4 (Myosin heavy chain 2b) (MyHC-2b) (Myosin heavy chain 4) | Myh4 | Q5SX39 | 3 |
| Myosin-6 (Myosin heavy chain 6) (Myosin heavy chain, cardiac muscle alpha isoform) (MyHC-alpha) | Myh6 Myhca | Q02566 | 3 |
| Myosin-8 (Myosin heavy chain 8) (Myosin heavy chain, skeletal muscle, perinatal) (MyHC-perinatal) | Myh8 Myhsp | P13542 | 3 |
| Myotubularin-related protein 10 | Mtmr10 | Q7TPM9 | 3 |
| Myotubularin-related protein 3 (EC 3.1.3.48) (Phosphatidylinositol-3,5-bisphosphate 3-phosphatase) (EC 3.1.3.95) (Phosphatidylinositol-3-phosphate phosphatase) (EC 3.1.3.64) | Mtmr3 | Q8K296 | 3 |
| N-acetylgalactosaminyltransferase 7 (EC 2.4.1.-) (Polypeptide GalNAc transferase 7) (GalNAc-T7) (pp-GaNTase 7) (Protein-UDP acetylgalactosaminyltransferase 7) (UDP-GalNAc:polypeptide N-acetylgalactosaminyltransferase 7) | Galnt7 | Q80VA0 | 3 |
| N-acetylglucosamine-1-phosphodiester alpha-N-acetylglucosaminidase (EC 3.1.4.45) (Mannose 6-phosphate-uncovering enzyme) (Phosphodiester alpha-GlcNAcase) | Nagpa | Q8BJ48 | 3 |
| N-acetyltransferase 5 (ARD1 homolog, S. cerevisiae), isoform CRA_a (N-alpha-acetyltransferase 20) (Putative uncharacterized protein) | Naa20 Nat5 mCG_10160 | Q9DB82 | 3 |
| N-alpha-acetyltransferase 20 (EC 2.3.1.254) (Methionine N-acetyltransferase) (N-acetyltransferase 5) (N-terminal acetyltransferase B complex catalytic subunit NAA20) (N-terminal acetyltransferase B complex catalytic subunit NAT5) (NatB complex subunit NAT5) (NatB catalytic subunit) | Naa20 Nat5 | P61600 | 3 |
| N-alpha-acetyltransferase 30 (EC 2.3.1.256) (N-acetyltransferase 12) (N-acetyltransferase MAK3 homolog) (NatC catalytic subunit) | Naa30 Mak3 Nat12 | Q8CES0 | 3 |
| N-alpha-acetyltransferase 35, NatC auxiliary subunit (Embryonic growth-associated protein) (Protein MAK10 homolog) | Naa35 Egap Mak10 | Q6PHQ8 | 3 |
| N-lysine methyltransferase SMYD2 (EC 2.1.1.-) (Histone methyltransferase SMYD2) (EC 2.1.1.43) (SET and MYND domain-containing protein 2) | Smyd2 | Q8R5A0 | 3 |
| N6-adenosine-methyltransferase subunit METTL3 (EC 2.1.1.62) (Methyltransferase-like protein 3) (N6-adenosine-methyltransferase 70 kDa subunit) (MT-A70) | Mettl3 Mta70 | Q8C3P7 | 3 |
| Na(+)/H(+) exchange regulatory cofactor NHE-RF | Slc9a3r2 | A0A0R4IZX2 | 3 |
| NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 5 (Complex I subunit B13) (Complex I-13kD-B) (CI-13kD-B) (NADH-ubiquinone oxidoreductase 13 kDa-B subunit) | Ndufa5 | Q9CPP6 | 3 |
| NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 3 (Complex I-B12) (CI-B12) (NADH-ubiquinone oxidoreductase B12 subunit) | Ndufb3 | Q9CQZ6 | 3 |
| NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 5, mitochondrial (Complex I-SGDH) (CI-SGDH) (NADH-ubiquinone oxidoreductase SGDH subunit) | Ndufb5 | Q9CQH3 | 3 |
| NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 6 (Complex I-B17) (CI-B17) (NADH-ubiquinone oxidoreductase B17 subunit) | Ndufb6 Gm137 | Q3UIU2 | 3 |
| NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 9 (Complex I-B22) (CI-B22) (NADH-ubiquinone oxidoreductase B22 subunit) | Ndufb9 | Q9CQJ8 | 3 |
| NADH dehydrogenase [ubiquinone] iron-sulfur protein 5 (Complex I-15 kDa) (CI-15 kDa) (NADH-ubiquinone oxidoreductase 15 kDa subunit) [Cleaved into: NADH dehydrogenase [ubiquinone] iron-sulfur protein 5, N-terminally processed] | Ndufs5 | Q99LY9 | 3 |
| NADH dehydrogenase [ubiquinone] iron-sulfur protein 6, mitochondrial (Complex I-13kD-A) (CI-13kD-A) (NADH-ubiquinone oxidoreductase 13 kDa-A subunit) | Ndufs6 Ip13 | P52503 | 3 |
| NADH-cytochrome b5 reductase 1 (b5R.1) (EC 1.6.2.2) (NAD(P)H:quinone oxidoreductase type 3 polypeptide A2) | Cyb5r1 Nqo3a2 | Q9DB73 | 3 |
| NADPH:adrenodoxin oxidoreductase, mitochondrial (AR) (Adrenodoxin reductase) (EC 1.18.1.6) (Ferredoxin--NADP(+) reductase) (Ferredoxin reductase) | Fdxr | Q61578 | 3 |
| Nardilysin, N-arginine dibasic convertase, NRD convertase 1 | Nrd1 | A6PWC3 | 3 |
| Nectin-3 (Nectin cell adhesion molecule 3) (Poliovirus receptor-related protein 3) (CD antigen CD113) | Nectin3 Pvrl3 | Q9JLB9 | 3 |
| NEDD4-binding protein 1 (N4BP1) | N4bp1 Kiaa0615 | Q6A037 | 3 |
| NEDD8 ultimate buster 1 (Negative regulator of ubiquitin-like proteins 1) (Protein BS4) | Nub1 Nyren18 | P54729 | 3 |
| NEDD8-activating enzyme E1 catalytic subunit (Putative uncharacterized protein) | Uba3 Ube1c | Q3TL72 | 3 |
| Neurabin-2 (Neurabin-II) (Protein phosphatase 1 regulatory subunit 9B) (Spinophilin) | Ppp1r9b | Q6R891 | 3 |
| Neurobeachin (Lysosomal-trafficking regulator 2) | Nbea Lyst2 | Q9EPN1 | 3 |
| Neuroblastoma-amplified sequence | Nbas | E9Q411 | 3 |
| Neurocalcin-delta | Ncald D15Ertd412e | Q91X97 | 3 |
| Neurochondrin (M-Sema F-associating protein of 75 kDa) (Norbin) | Ncdn Kiaa0607 Sfap75 | Q9Z0E0 | 3 |
| Neurofilament light polypeptide (NF-L) (68 kDa neurofilament protein) (Neurofilament triplet L protein) | Nefl Nf68 Nfl | P08551 | 3 |
| Neurofilament medium polypeptide (NF-M) (160 kDa neurofilament protein) (Neurofilament 3) (Neurofilament triplet M protein) | Nefm Nef3 Nfm | P08553 | 3 |
| Neuron navigator 1 (Pore membrane and/or filament-interacting-like protein 3) | Nav1 Kiaa1151 Pomfil3 | Q8CH77 | 3 |
| Nexilin (F-actin-binding protein) | Nexn | Q7TPW1 | 3 |
| Next to BRCA1 gene 1 protein (Fragment) | Nbr1 | F6S397 | 3 |
| NF-kappa-B essential modulator (Fragment) | Ikbkg | A3KG44 | 3 |
| NF-kappa-B-repressing factor (NFkB-repressing factor) (Transcription factor NRF) | Nkrf Nrf | Q8BY02 | 3 |
| Nicotinate phosphoribosyltransferase (NAPRTase) (EC 6.3.4.21) (Nicotinate phosphoribosyltransferase domain-containing protein 1) | Naprt Naprt1 | Q8CC86 | 3 |
| Ninein | Nin Kiaa1565 | Q61043 | 3 |
| Nipped-B-like protein (Delangin homolog) (SCC2 homolog) | Nipbl | Q6KCD5 | 3 |
| NmrA-like family domain-containing protein 1 | Nmral1 | D3YU12 | 3 |
| Non-histone chromosomal protein HMG-17 (Fragment) | Hmgn2 | F6W687 | 3 |
| Non-specific serine/threonine protein kinase (EC 2.7.11.1) | Mark2 | E9QMP6 | 3 |
| Non-specific serine/threonine protein kinase (EC 2.7.11.1) | Mark2 | A0A0R4J227 | 3 |
| Nuclear distribution protein nudE homolog 1 (NudE) (mNudE) | Nde1 Nude | Q9CZA6 | 3 |
| Nuclear distribution protein nudE-like 1 (Protein mNudE-like) (Protein Nudel) (mNudE-L) | Ndel1 Nudel | Q9ERR1 | 3 |
| Nuclear pore complex protein Nup107 (107 kDa nucleoporin) (Nucleoporin Nup107) | Nup107 | Q8BH74 | 3 |
| Nuclear pore complex protein Nup155 (155 kDa nucleoporin) (Nucleoporin Nup155) | Nup155 | Q99P88 | 3 |
| Nuclear pore complex protein Nup54 (54 kDa nucleoporin) (Nucleoporin Nup54) | Nup54 | Q8BTS4 | 3 |
| Nuclear receptor-binding protein (HLS7-interacting protein kinase) (MLF1 adapter molecule) | Nrbp1 Madm Nrbp | Q99J45 | 3 |
| Nuclear ubiquitous casein and cyclin-dependent kinase substrate 1 (JC7) | Nucks1 Nucks | Q80XU3 | 3 |
| Nucleobindin-2 (DNA-binding protein NEFA) (Prepronesfatin) [Cleaved into: Nesfatin-1] | Nucb2 Nefa | P81117 | 3 |
| Nucleolar complex protein 3 homolog (NOC3 protein homolog) (Factor for adipocyte differentiation 24) (NOC3-like protein) (Nucleolar complex-associated protein 3-like protein) | Noc3l Ad24 Fad24 | Q8VI84 | 3 |
| Nucleolar protein 10 | Nol10 Gm67 | Q5RJG1 | 3 |
| Nucleolar protein 14 (Nucleolar complex protein 14) | Nop14 Nol14 | Q8R3N1 | 3 |
| Nucleolar transcription factor 1 (Upstream binding transcription factor, RNA polymerase I, isoform CRA_a) | Ubtf mCG_140722 | A2AWT6 | 3 |
| Nucleolysin TIA-1 (RNA-binding protein TIA-1) (T-cell-restricted intracellular antigen-1) (TIA-1) | Tia1 Tia | P52912 | 3 |
| Nucleophosmin | Npm1 | Q5SQB0 | 3 |
| Nucleoporin Nup37 (Nup107-160 subcomplex subunit Nup37) | Nup37 | Q9CWU9 | 3 |
| Nucleoporin NUP53 (35 kDa nucleoporin) (Mitotic phosphoprotein 44) (MP-44) (Nuclear pore complex protein Nup53) (Nucleoporin Nup35) | Nup35 Mp44 Nup53 | Q8R4R6 | 3 |
| Nucleosome assembly protein 1-like 1 | Nap1l1 | E9PW66 | 3 |
| NudC domain-containing protein 2 | Nudcd2 | E0CYQ2 | 3 |
| Oligoribonuclease, mitochondrial (EC 3.1.-.-) (RNA exonuclease 2 homolog) (Small fragment nuclease) | Rexo2 Smfn | Q9D8S4 | 3 |
| Oligosaccharyltransferase complex subunit OSTC | Ostc | Q78XF5 | 3 |
| Omega-amidase NIT2 (EC 3.5.1.3) (Nitrilase homolog 2) | Nit2 D16Ertd502e | Q9JHW2 | 3 |
| Osteopetrosis-associated transmembrane protein 1 (Chloride channel 7 beta subunit) (Grey-lethal protein) | Ostm1 Gl | Q8BGT0 | 3 |
| Ovostatin homolog | Ovos | Q3UU35 | 3 |
| Oxidoreductase HTATIP2 (EC 1.1.1.-) | Htatip2 Cc3 Tip30 | Q9Z2G9 | 3 |
| Oxysterol-binding protein-related protein 11 (ORP-11) (OSBP-related protein 11) | Osbpl11 | Q8CI95 | 3 |