| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| Q58DC7 | Protein-lysine methyltransferase METTL21E; EC 2.1.1.-; Methyltransferase-like protein 21E; | METTL21E; | NP_001014922.1; | 290 | cow |
| P55943 | Metallothionein-II, hippocampal; MT-2; | NULL | NULL | 61 | cow |
| P68301 | Metallothionein-2; MT-2; Metallothionein-II; MT-II; | MT2; MT2A; | NP_001068608.1; | 61 | cow |
| P37359 | Metallothionein-3; MT-3; Growth inhibitory factor; GIF; Metallothionein-III; MT-III; | MT3; | NP_001106775.1; | 68 | cow |
| A6QL72 | Metastasis-associated protein MTA3; | MTA3; | NP_001095434.1; | 590 | cow |
| Q3MHF7 | S-methyl-5'-thioadenosine phosphorylase; EC 2.4.2.28; 5'-methylthioadenosine phosphorylase; MTA phosphorylase; MTAP; MTAPase; | MTAP; | XP_002689552.1; | 283 | cow |
| Q9N285 | Mitochondrial carrier homolog 2; | MTCH2; | NP_788807.1; | 303 | cow |
| Q0P5C2 | Bifunctional methylenetetrahydrofolate dehydrogenase/cyclohydrolase, mitochondrial; EC 3.5.4.9; EC 1.5.1.15; | MTHFD2; | NP_001069223.1; | 350 | cow |
| Q58CR1 | Mitochondrial fission regulator 2; | MTFR2; FAM54A; | NP_001017948.1; | 366 | cow |
| Q4PS77 | Mitochondrial ribosome-associated GTPase 1; Mitochondrial GTPase 1; | MTG1; | NP_001020498.2; | 332 | cow |
| Q5I598 | Methylenetetrahydrofolate reductase; EC 1.5.1.20; | MTHFR; | NP_001011685.1; | 655 | cow |
| Q2KI24 | Methenyltetrahydrofolate synthase domain-containing protein; | MTHFSD; | NP_001039507.1; | 380 | cow |
| A6QLT4 | Myotubularin; Phosphatidylinositol-3,5-bisphosphate 3-phosphatase; EC 3.1.3.95; Phosphatidylinositol-3-phosphate phosphatase; EC 3.1.3.64; | MTM1; | NP_001193354.1; | 603 | cow |
| A6QLT2 | Myotubularin-related protein 2; Phosphatidylinositol-3,5-bisphosphate 3-phosphatase; EC 3.1.3.95; Phosphatidylinositol-3-phosphate phosphatase; EC 3.1.3.64; | MTMR2; | NP_001095664.1; | 643 | cow |
| Q2KJ24 | Myotubularin-related protein 9; | MTMR9; | NP_001039721.1; | 543 | cow |
| Q2NL31 | Methylthioribose-1-phosphate isomerase; M1Pi; MTR-1-P isomerase; EC 5.3.1.23; S-methyl-5-thioribose-1-phosphate isomerase; Translation initiation factor eIF-2B subunit alpha/beta/delta-like protein; | MRI1; | NP_001039852.1; | 358 | cow |
| Q0VCJ2 | Methylthioribulose-1-phosphate dehydratase; MTRu-1-P dehydratase; EC 4.2.1.109; APAF1-interacting protein; | APIP; | NP_001068820.1; | 242 | cow |
| Q3ZBL1 | 1,2-dihydroxy-3-keto-5-methylthiopentene dioxygenase (EC 1.13.11.54) (Acireductone dioxygenase; Fe(2+)-requiring); ARD; Fe-ARD; Membrane-type 1 matrix metalloproteinase cytoplasmic tail-binding protein 1; MTCBP-1; | ADI1; MTCBP1; | NP_001030545.1; | 179 | cow |
| Q3T0F7 | Myotrophin; | MTPN; | NP_976238.2; | 118 | cow |
| P55156 | Microsomal triglyceride transfer protein large subunit; Fragment; | MTTP; MTP; | NULL | 887 | cow |
