| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| P97592 | Mast cell protease 4; rMCP-4; EC 3.4.21.-; Mast cell protease IV; rMCP-IV; | Mcpt4; | NP_062194.1; | 246 | rat |
| P97594 | Mast cell protease 8; rMCP-8; EC 3.4.21.-; Mast cell protease VIII; rMCP-VIII; | Mcpt8; | NP_067609.1;XP_003751517.1; | 248 | rat |
| Q9Z0M4 | Membrane cofactor protein; CD antigen CD46; | Cd46; Mcp; | NP_062063.1; | 355 | rat |
| P22199 | Mineralocorticoid receptor; MR; Nuclear receptor subfamily 3 group C member 2; | Nr3c2; Mlr; | NP_037263.1; | 981 | rat |
| Q64298 | Sperm mitochondrial-associated cysteine-rich protein; | Smcp; Mcs Mcsp; | NP_113724.1; | 145 | rat |
| Q4G009 | Malignant T-cell-amplified sequence 1; MCT-1; | Mcts1; | NP_001037702.1; | 182 | rat |
| D3Z8D9 | Mitotic spindle assembly checkpoint protein MAD2B; Mitotic arrest deficient 2-like protein 2; MAD2-like protein 2; | Mad2l2; | NP_001012106.1;XP_006239452.1;XP_006239453.1;XP_008762478.1; | 211 | rat |
| Q5U2M8 | Mediator of DNA damage checkpoint protein 1; | Mdc1; | NP_001159747.1; | 1279 | rat |
| P85171 | MAM domain-containing glycosylphosphatidylinositol anchor protein 1; Ig6M; | Mdga1; | XP_006256269.1; | 956 | rat |
| P60756 | MAM domain-containing glycosylphosphatidylinositol anchor protein 2; MAM domain-containing protein 1; | Mdga2; Mamdc1; | NP_954890.1; | 949 | rat |
| O88989 | Malate dehydrogenase, cytoplasmic; EC 1.1.1.37; Cytosolic malate dehydrogenase; | Mdh1; Mdh; | NP_150238.1; | 334 | rat |
| P04636 | Malate dehydrogenase, mitochondrial; EC 1.1.1.37; | Mdh2; Mor1; | NP_112413.2; | 338 | rat |
| Q5PQN4 | Nuclear protein MDM1; | Mdm1; | NP_001017459.2; | 719 | rat |
| Q5XIN1 | Protein Mdm4; Double minute 4 protein; Mdm2-like p53-binding protein; Protein Mdmx; p53-binding protein Mdm4; | Mdm4; Mdmx; | NP_001012026.1; | 490 | rat |
| P43245 | Multidrug resistance protein 1; EC 3.6.3.44; ATP-binding cassette sub-family B member 1; P-glycoprotein 1; CD antigen CD243; | Abcb1; Mdr1 Mdr1b Pgy1; | NULL | 1277 | rat |
| Q08201 | Multidrug resistance protein 3; EC 3.6.3.44; ATP-binding cassette sub-family B member 4; Multidrug resistance protein 2; P-glycoprotein 2; P-glycoprotein 3; | Abcb4; Mdr2 Pgp3 Pgy2; | NP_036822.1; | 1278 | rat |
| Q5FVH7 | Male-enhanced antigen 1; MEA-1; | Mea1; Mea; | NP_001037751.1;XP_006244628.1;XP_006244629.1;XP_006244630.1;XP_006244631.1;XP_008765102.1; | 174 | rat |
| Q00566 | Methyl-CpG-binding protein 2; MeCp-2 protein; MeCp2; | Mecp2; | NP_073164.2;XP_006229628.1;XP_006229629.1; | 492 | rat |
| Q9Z311 | Trans-2-enoyl-CoA reductase, mitochondrial; EC 1.3.1.38; Nuclear receptor-binding factor 1; NRBF-1; | Mecr; Nrbf1; | NP_058905.1; | 373 | rat |
| Q5XIE9 | Mediator of RNA polymerase II transcription subunit 20; Mediator complex subunit 20; TRF-proximal protein homolog; | Med20; Trfp; | NP_001013196.1; | 212 | rat |
