| Monomeric sarcosine oxidase | Bacillus sp. (strain B-0618) | Catalyzes the oxidative demethylation of sarcosine. Can also oxidize other secondary amino acids such as N-methyl-L-a... more | 8 | Details |
| Morphinone reductase | Pseudomonas putida | Not Available | 1 | Details |
| Motilin receptor | Humans | Receptor for motilin | 5 | Details |
| mRNA of ApoB-100 | Humans | This gene product is the main apolipoprotein of chylomicrons and low density lipoproteins. It occurs in plasma as two... more | 1 | Details |
| mRNA-capping enzyme | PBCV-1 | mRNA capping. Transfers a GMP cap onto the end of mRNA that terminates with a 5'-diphosphate tail. | 2 | Details |
| Mu-type opioid receptor | Humans | Receptor for endogenous opioids such as beta-endorphin and endomorphin. Receptor for natural and synthetic opioids in... more | 111 | Details |
| Mucin-1 | Humans | The alpha subunit has cell adhesive properties. Can act both as an adhesion and an anti-adhesion protein. May provide... more | 12 | Details |
| Mucin-16 | Humans | Thought to provide a protective, lubricating barrier against particles and infectious agents at mucosal surfaces | 6 | Details |
| Mucin-2 | Humans | Coats the epithelia of the intestines and other mucus membrane-containing organs to provide a protective, lubricating... more | 3 | Details |
| Mucin-4 | Humans | Membrane-bound mucin, a family of highly glycosylated proteins that constitute the major component of the mucus, the ... more | 1 | Details |
| Mucin-5AC | Humans | Gel-forming glycoprotein of gastric and respiratory tract epithelia that protects the mucosa from infection and chemi... more | 3 | Details |
| Mucin-5B | Humans | Gel-forming mucin that is thought to contribute to the lubricating and viscoelastic properties of whole saliva and ce... more | 1 | Details |
| Mucosa-associated lymphoid tissue lymphoma translocation protein 1 | Humans | Protease that enhances BCL10-induced activation: acts via formation of CBM complexes that channel adaptive and innate... more | 1 | Details |
| Mucosal addressin cell adhesion molecule 1 | Humans | Cell adhesion leukocyte receptor expressed by mucosal venules, helps to direct lymphocyte traffic into mucosal tissue... more | 2 | Details |
| Multidrug and toxin extrusion protein 1 | Humans | Multidrug efflux pump that functions as a H(+)/organic cation antiporter. Plays a physiological role in the excretion... more | 107 | Details |
| Multidrug and toxin extrusion protein 2 | Humans | Multidrug efflux pump that functions as a H(+)/organic cation antiporter. Mediates the efflux of cationic compounds, ... more | 76 | Details |
| Multidrug efflux pump subunit AcrB | Escherichia coli (strain K12) | AcrA-AcrB-AcrZ-TolC is a drug efflux protein complex with broad substrate specificity that uses the proton motive for... more | 3 | Details |
| Multidrug resistance protein 1 | Plasmodium falciparum (isolate FC27 / Papua New Guinea) | Energy-dependent efflux pump responsible for decreased drug accumulation in multidrug-resistant cells. | 3 | Details |
| Multidrug resistance protein MdtK | Escherichia coli | Multidrug efflux pump that functions probably as a Na(+)/drug antiporter. | 1 | Details |
| Multifunctional procollagen lysine hydroxylase and glycosyltransferase LH3 | Humans | Multifunctional enzyme that catalyzes a series of essential post-translational modifications on Lys residues in proco... more | 2 | Details |
| Multifunctional protein CAD | Humans | Multifunctional protein that encodes the first 3 enzymatic activities of the de novo pyrimidine pathway: carbamoylpho... more | 3 | Details |
| Multiple coagulation factor deficiency protein 2 | Humans | The MCFD2-LMAN1 complex forms a specific cargo receptor for the ER-to-Golgi transport of selected proteins. Plays a r... more | 3 | Details |
| Muscarinic acetylcholine receptor | Humans | Not Available | 30 | Details |
| Muscarinic acetylcholine receptor M1 | Humans | The muscarinic acetylcholine receptor mediates various cellular responses, including inhibition of adenylate cyclase,... more | 116 | Details |
| Muscarinic acetylcholine receptor M2 | Humans | Muscarinic receptor for acetylcholine, a neurotransmitter found in the brain, neuromuscular junctions and the autonom... more | 93 | Details |