| Mast cell protease 1 (mMCP-1) (EC 3.4.21.-) | Mcpt1 | P11034 | 1 |
| Matrilin-4 (MAT-4) | Matn4 | O89029 | 1 |
| Matrix metalloproteinase-17 (MMP-17) (EC 3.4.24.-) (Membrane-type matrix metalloproteinase 4) (MT-MMP 4) (MTMMP4) (Membrane-type-4 matrix metalloproteinase) (MT4-MMP) (MT4MMP) | Mmp17 Mt4mmp | Q9R0S3 | 1 |
| Matrix metalloproteinase-23 (MMP-23) (EC 3.4.24.-) (CAMP metalloproteinase) (CA-MMP) [Cleaved into: Matrix metalloproteinase-23, soluble form] | Mmp23 Cammp | O88676 | 1 |
| MAU2 chromatid cohesion factor homolog (MAU-2) (Cohesin loading complex subunit SCC4 homolog) | Mau2 Kiaa0892 | Q9D2X5 | 1 |
| MAX dimerization protein 1 (Max dimerization protein 1) | Mxd1 | Q8K1Z8 | 1 |
| Max-interacting protein 1 (Max interactor 1) | Mxi1 | P50540 | 1 |
| MCG10161, isoform CRA_b (Protein 4930529M08Rik) | 4930529M08Rik mCG_10161 | B7ZCD6 | 1 |
| MCG1029946 (Olfactory receptor MOR127-2) (Olfactory receptor Olfr351) (Protein Olfr351) | Olfr351 mCG_1029946 | Q8VGK1 | 1 |
| MCG1034059 (Olfactory receptor Olfr761) (Protein Olfr761) | Olfr761 mCG_1034059 | Q7TRJ0 | 1 |
| MCG1034639 (Olfactory receptor 960) (Olfactory receptor MOR224-12) (Protein Olfr960) | Olfr960 mCG_1034639 | Q8VET5 | 1 |
| MCG1035519 (Predicted gene, EG238829) (Protein Gm4937) | Gm4937 EG238829 mCG_1035519 | Q80ZS5 | 1 |
| MCG1037812 (Protein AU022751) | AU022751 mCG_1037812 | B1B0V2 | 1 |
| MCG1040007 (Olfactory receptor 1170) (Olfactory receptor MOR174-12) (Olfactory receptor Olfr1170) (Protein Olfr1170) | Olfr1170 Olfr1168 Olfr1173 mCG_1040007 | Q8VFG1 | 1 |
| MCG1047359 (Olfactory receptor MOR103-3) (Olfactory receptor Olfr1416) (Protein Olfr1416) | Olfr1416 Olfr1415 mCG_1047359 | Q8VGU4 | 1 |
| MCG11474 (Protein 1700001K19Rik) (Uncharacterized protein) | 1700001K19Rik mCG_11474 | Q80ZT1 | 1 |
| MCG116841, isoform CRA_a (Protein Gm13023) | Gm13023 mCG_116841 | A2A8N2 | 1 |
| MCG118290 (Protein 4930503E14Rik) | 4930503E14Rik mCG_118290 | Q9D583 | 1 |
| MCG120165 (Protein Lce1h) | Lce1h Sprrl9 mCG_120165 | Q9D6R3 | 1 |
| MCG120270, isoform CRA_a (Protein Eci3) (Uncharacterized protein) | Eci3 1810022C23Rik mCG_120270 | Q78JN3 | 1 |
| MCG12357 (Protein Pabpc4l) | Pabpc4l mCG_12357 | G5E8X2 | 1 |
| MCG12570 (Protein Pnrc1) | Pnrc1 mCG_12570 | Q3TWH3 | 1 |
| MCG128973 (Protein 2310057N15Rik) (Uncharacterized protein) | 2310057N15Rik mCG_128973 | Q9D6T8 | 1 |
| MCG129950, isoform CRA_a (UBX domain-containing protein 7) | Ubxn7 mCG_129950 | G5E8R8 | 1 |
| MCG130173 (Protein Stfa2l1) (Stefin A2 like 1) | Stfa2l1 mCG_130173 | Q8BWM3 | 1 |
| MCG130705, isoform CRA_a (Protein 2410004P03Rik) | 2410004P03Rik mCG_130705 | D3Z430 | 1 |
| MCG13663, isoform CRA_a (Protein Atp2b1) | Atp2b1 mCG_13663 | G5E829 | 1 |
| MCG140256 (Pregnancy-specific glycoprotein 21) (Protein Psg21) | Psg21 mCG_140256 | Q9DAV5 | 1 |
| MCG140564 (Predicted gene, EG214321) (Protein Gm4787) | Gm4787 EG214321 mCG_140564 | B2RUD9 | 1 |
| MCG140634 (Olfactory receptor 1386) (Olfactory receptor Olfr1386) (Protein Olfr1386) | Olfr1386 mCG_140634 | Q7TQT0 | 1 |
| MCG140700, isoform CRA_c (Protein Zfp87) (Zinc finger protein 87) | Zfp87 mCG_140700 | Q8K2A4 | 1 |
| MCG140776 (Placental lactogen-I gamma) (Protein Prl3d3) | Prl3d3 Plig mCG_140776 | Q8CGZ7 | 1 |
| MCG141281, isoform CRA_a (Protein 1700007B14Rik) (Uncharacterized protein) | 1700007B14Rik mCG_141281 | Q149I8 | 1 |
| MCG141290 (Protein Pcdhb17) (Protocadherin beta 17) | Pcdhb17 mCG_141290 | Q91VD8 | 1 |
| MCG141401 (Olfactory receptor 103) (Olfactory receptor MOR250-3) (Olfactory receptor Olfr103) (Protein Olfr103) | Olfr103 mCG_141401 | Q920Y8 | 1 |
| MCG141406 (Olfactory receptor 116) (Olfactory receptor MOR218-2) (Olfactory receptor Olfr116) (Protein Olfr116) | Olfr116 mCG_141406 | Q923Q6 | 1 |
| MCG141498 (Olfactory receptor MOR24-2) (Protein Olfr593) | Olfr593 mCG_141498 | Q8VF28 | 1 |
| MCG141994 (Olfactory receptor Olfr1181) (Protein Olfr1181) | Olfr1181 Olfr1182 mCG_141994 | Q7TR18 | 1 |
| MCG142264, isoform CRA_b (Protein Akr1b10) | Akr1b10 mCG_142264 | G5E895 | 1 |
| MCG142364 (Olfactory receptor Olfr1307) (Protein Olfr1307) | Olfr1307 mCG_142364 | Q7TQX1 | 1 |
| MCG142671, isoform CRA_b (Protein Ces2b) (cDNA sequence BC015286) | Ces2b BC015286 mCG_142671 | Q6PDB7 | 1 |
| MCG14773 (Protein Susd5) | Susd5 mCG_14773 | G3UW60 | 1 |
| MCG1490, isoform CRA_b (Protein Tmem243) (Uncharacterized protein) | Tmem243 4930420K17Rik mCG_1490 | B2RVB9 | 1 |
| MCG14908, isoform CRA_b (Protein Slc22a26) (cDNA sequence BC014805) | Slc22a26 BC014805 mCG_14908 | Q91WJ2 | 1 |
| MCG14935, isoform CRA_a (Protein Wdr20a) | Wdr20a mCG_14935 | Q3UWE6 | 1 |
| MCG15614 (Protein 2310009B15Rik) | 2310009B15Rik mCG_15614 | D3Z1T2 | 1 |
| MCG16489, isoform CRA_a (Protein Chpf2) | Chpf2 mCG_16489 | Q3UU43 | 1 |
| MCG16539 (Protein Pnmal2) | Pnmal2 mCG_16539 | G3X9N3 | 1 |
| MCG1697, isoform CRA_a (Protein Fam154a) | Fam154a mCG_1697 | B1AXP3 | 1 |
| MCG19268 (Olfactory receptor 156) (Olfactory receptor MOR262-6) (Olfactory receptor Olfr156) (Protein Olfr156) | Olfr156 mCG_19268 | Q8VGA9 | 1 |
| MCG19272 (Olfactory receptor) (Olfactory receptor GA_x5J8B7W5BNN-979337-980296) (Olfactory receptor Olfr155) (Protein Olfr155) | Olfr155 OR37A or37a mCG_19272 | Q9QZ22 | 1 |
| MCG19772 (Protein Trim55) | Trim55 mCG_19772 | G3X8Y1 | 1 |
| MCG21235 (Protein Serpinb3b) | Serpinb3b mCG_21235 | Q9D1Q5 | 1 |
| MCG21564 (Protein Vmn2r84) | Vmn2r84 mCG_21564 | D3YWE3 | 1 |
| MCG22830 (Protein Zfp872) (Uncharacterized protein) | Zfp872 9530015I07Rik mCG_22830 | Q3UVL3 | 1 |
| MCG23032 (Olfactory receptor 1359) (Olfactory receptor Olfr1359) (Protein Olfr1359) | Olfr1359 mCG_23032 | Q7TQU5 | 1 |
| MCG3437 (Trophoblast specific protein alpha) (Trophoblast-specific protein alpha) | Tpbpa mCG_3437 | Q9CPR0 | 1 |
| MCG3697, isoform CRA_c (Protein Upf3a) (UPF3 regulator of nonsense transcripts homolog A (Yeast)) | Upf3a mCG_3697 | Q3ULJ3 | 1 |
| MCG52024 (Olfactory receptor MOR135-26) (Olfactory receptor Olfr390) (Protein Olfr390) | Olfr390 mCG_52024 | Q8VEZ7 | 1 |
| MCG52355 (Olfactory receptor Olfr20) (Protein Olfr20) | Olfr20 mCG_52355 | Q7TRX9 | 1 |
| MCG5400 (Protein Myl12a) (Uncharacterized protein) | Myl12a 2900073G15Rik mCG_5400 | Q6ZWQ9 | 1 |
| MCG54888 (Olfactory receptor 457) (Olfactory receptor MOR257-1) (Olfactory receptor Olfr457) (Protein Olfr457) | Olfr457 mCG_54888 | Q8VGP5 | 1 |
| MCG57670 (Olfactory receptor MOR202-37) (Olfactory receptor Olfr1484) (Protein Olfr1484) | Olfr1484 mCG_57670 | Q8VEU6 | 1 |
| MCG59002 (Olfactory receptor MOR253-4) (Protein Olfr539) | Olfr539 mCG_59002 | Q8VGL9 | 1 |
| MCG59038 (Olfactory receptor 1443) (Olfactory receptor MOR202-8) (Olfactory receptor Olfr1443) (Protein Olfr1443) | Olfr1443 mCG_59038 | Q8VFW8 | 1 |
| MCG61680 (Melanoma antigen family B, 18) (Protein Mageb18) | Mageb18 mCG_61680 | Q8BQR7 | 1 |
| MCG64059 (Olfactory receptor MOR202-6) (Olfactory receptor Olfr1453) (Protein Olfr1453) | Olfr1453 mCG_64059 | Q8VFX0 | 1 |
| MCG64776 (Protein 4933416C03Rik) | 4933416C03Rik mCG_64776 | Q3V063 | 1 |
| MCG67161 (Olfactory receptor 531) (Olfactory receptor MOR251-3) (Olfactory receptor Olfr531) (Protein Olfr531) | Olfr531 mCG_67161 | Q8VGL2 | 1 |
| Mdm2-binding protein (mMTBP) | Mtbp | Q8BJS8 | 1 |
| MDS1 and EVI1 complex locus protein MDS1 (Myelodysplasia syndrome 1 protein homolog) | Mecom Mds1 | Q9Z1L8 | 1 |
| Mediator of RNA polymerase II transcription subunit 21 (Mediator complex subunit 21) (RNA polymerase II holoenzyme component SRB7) (RNAPII complex component SRB7) | Med21 Srb7 Surb7 | Q9CQ39 | 1 |
| Mediator of RNA polymerase II transcription subunit 24 (Mediator complex subunit 24) (Thyroid hormone receptor-associated protein 4) (Thyroid hormone receptor-associated protein complex 100 kDa component) (Trap100) (mTRAP100) | Med24 D11Ertd307e Thrap4 Trap100 | Q99K74 | 1 |
| Mediator of RNA polymerase II transcription subunit 28 (Mediator complex subunit 28) | Med28 Fksg20 | Q920D3 | 1 |
| Mediator of RNA polymerase II transcription subunit 7 (Cofactor required for Sp1 transcriptional activation subunit 9) (CRSP complex subunit 9) (Mediator complex subunit 7) | Med7 Crsp9 | Q9CZB6 | 1 |
| Mediator of RNA polymerase II transcription subunit 8 (Activator-recruited cofactor 32 kDa component) (ARC32) (Mediator complex subunit 8) | Med8 MNCb-2386 | Q9D7W5 | 1 |
| Medium-chain specific acyl-CoA dehydrogenase, mitochondrial (MCAD) (EC 1.3.8.7) | Acadm | P45952 | 1 |
| MEF2-activating motif and SAP domain-containing transcriptional regulator (MEF2-activating SAP transcriptional regulatory protein) | Mamstr Mastr | Q0ZCJ7 | 1 |
| Meiosis 1 arrest protein (Meiosis 1-arresting protein) (Meiosis 1-associated protein) (Spermatogenesis-associated protein 37) | M1ap D6Mm5e Spata37 | Q9Z0E1 | 1 |
| Meiosis arrest female protein 1 (Limkain-b1) | Marf1 Kiaa0430 Lkap | Q8BJ34 | 1 |
| Meiotic nuclear division protein 1 homolog | Mnd1 | Q8K396 | 1 |
| Meiotic recombination protein DMC1/LIM15 homolog | Dmc1 Dmc1h Lim15 | Q61880 | 1 |
| Meiotic recombination protein SPO11 | Spo11 | Q9WTK8 | 1 |
| Melanocortin-2 receptor accessory protein (Fat cell-specific low molecular weight protein) (Fat tissue-specific low MW protein) | Mrap Falp | Q9D159 | 1 |
| Melanoma inhibitory activity protein 3 (Transport and Golgi organization protein 1) | Mia3 Kiaa0268 Tango1 | Q8BI84 | 1 |
| Melanoma-associated antigen D1 (Dlxin-1) (MAGE-D1 antigen) (Neurotrophin receptor-interacting MAGE homolog) | Maged1 Nrage | Q9QYH6 | 1 |
| Melanoma-associated antigen G1 (MAGE-G1 antigen) (Necdin-like protein 2) | Ndnl2 Mageg1 | Q9CPR8 | 1 |
| Melanoma-derived growth regulatory protein (Cartilage-derived retinoic acid-sensitive protein) (CD-RAP) (Melanoma inhibitory activity protein) | Mia Cdrap Mia1 | Q61865 | 1 |
| Melatonin-related receptor (G protein-coupled receptor 50) (H9) | Gpr50 | O88495 | 1 |
| Membrane magnesium transporter 1 (ER membrane protein complex subunit 5) (Transmembrane protein 32) | Mmgt1 Emc5 Tmem32 | Q8K273 | 1 |
| Membrane primary amine oxidase (EC 1.4.3.21) (Copper amine oxidase) (Semicarbazide-sensitive amine oxidase) (SSAO) (Vascular adhesion protein 1) (VAP-1) | Aoc3 Vap1 | O70423 | 1 |
| Membrane progestin receptor gamma (mPR gamma) (Progestin and adipoQ receptor family member V) | Paqr5 Mprg | Q9DCU0 | 1 |
| Membrane protein FAM174A (Transmembrane protein 157) | Fam174a Tmem157 | Q9D3L0 | 1 |
| Membrane-associated guanylate kinase, WW and PDZ domain-containing protein 2 (Activin receptor-interacting protein 1) (Acvrip1) (Atrophin-1-interacting protein 1) (AIP-1) (Membrane-associated guanylate kinase inverted 2) (MAGI-2) | Magi2 Acvrinp1 Aip1 Arip1 | Q9WVQ1 | 1 |
| Membrane-associated guanylate kinase, WW and PDZ domain-containing protein 3 (Membrane-associated guanylate kinase inverted 3) (MAGI-3) | Magi3 Kiaa1634 | Q9EQJ9 | 1 |
| Membrane-associated phosphatidylinositol transfer protein 1 (Drosophila retinal degeneration B homolog 1) (RdgB1) (Mpt-1) (Phosphatidylinositol transfer protein, membrane-associated 1) (PITPnm 1) (Pyk2 N-terminal domain-interacting receptor 2) (NIR-2) | Pitpnm1 Dres9 Mpt1 Nir2 Pitpnm | O35954 | 1 |
| Membrane-associated transporter protein (Melanoma antigen AIM1) (Protein AIM-1) (Protein underwhite) (Solute carrier family 45 member 2) | Slc45a2 Aim1 Matp uw | P58355 | 1 |
| Membrane-spanning 4-domains subfamily A member 15 | Ms4a15 | Q3UPL6 | 1 |
| Membrane-spanning 4-domains subfamily A member 6B | Ms4a6b | Q99N09 | 1 |
| Menin | Men1 | O88559 | 1 |