- Misshapen Like Kinase 1 (MINK1)
- Mannosyl Alpha-1,3-Glycoprotein Beta-1,2-N-Acetylglucosaminyltransferase (MGAT1)
- Mannosyl Alpha-1,6-Glycoprotein Beta-1,2-N-Acetylglucosaminyltransferase (MGAT2)
- Mannosyl Alpha-1,4-Glycoprotein Beta-1,4-N-Acetylglucosaminyltransferase (MGAT3)
- Mannosyl Alpha-1,3-Glycoprotein Beta-1,4-N-Acetylglucosaminyltransferase (MGAT4)
- Mannosyl Alpha-1,6-Glycoprotein Beta-1,6-N-Acetylglucosaminyltransferase (MGAT5)
- Methyltransferase Like Protein 3 (METTL3)
- Methyltransferase Like Protein 2B (METTL2B)
- Methyltransferase Like Protein 1 (METTL1)
- Methionyl Aminopeptidase 2 (METAP2)
- Methionyl Aminopeptidase 1 (METAP1)
- Maternal Embryonic Leucine Zipper Kinase (MELK)
- Mitochondrial Trans-2-Enoyl Coenzyme A Reductase (MECR)
- Malic Enzyme 3, NADP+ Dependent, Mitochondrial (ME3)
- Malic Enzyme 2, NADP+ Dependent, Mitochondrial (ME2)