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<p>CSV import</p> <p><b>New page</b></p><div>[[File:Methylenomycin B.svg|thumb|{{PAGENAME}}]]&lt;br&gt;&#039;&#039;&#039;Methylenomycin B&#039;&#039;&#039; is a [[macrolide]] [[antibiotic]] that is produced by the [[bacterium]] &#039;&#039;[[Streptomyces coelicolor]]&#039;&#039;. It is part of the [[methylenomycin]] family of antibiotics, which also includes [[Methylenomycin A]]. Methylenomycin B is known for its potent [[antibacterial]] activity, particularly against [[Gram-positive bacteria]].<br /> <br /> ==Structure and Synthesis==<br /> Methylenomycin B is a 16-membered macrolide antibiotic. Its structure is characterized by a large [[macrocyclic]] lactone ring, to which two [[deoxy sugar]] units are attached. The synthesis of Methylenomycin B involves a complex series of [[biochemical reactions]], including [[polyketide synthase]]-mediated chain elongation and cyclization, as well as [[glycosylation]] and [[methylation]] steps.<br /> <br /> ==Mechanism of Action==<br /> The mechanism of action of Methylenomycin B is similar to that of other macrolide antibiotics. It binds to the [[50S ribosomal subunit]] of bacterial cells, inhibiting [[protein synthesis]] and thereby stopping bacterial growth. However, the exact binding site and mode of action of Methylenomycin B are still under investigation.<br /> <br /> ==Clinical Use and Resistance==<br /> While Methylenomycin B shows potent antibacterial activity in vitro, its clinical use has been limited due to its poor [[bioavailability]] and potential for [[drug resistance]]. Resistance to Methylenomycin B can occur through several mechanisms, including modification of the antibiotic target, active efflux of the antibiotic from the bacterial cell, and enzymatic inactivation of the antibiotic.<br /> <br /> ==Research and Future Directions==<br /> Research into Methylenomycin B and other methylenomycins is ongoing, with the aim of improving their pharmacological properties and overcoming resistance. This includes studies into the biosynthesis and structure-activity relationships of these antibiotics, as well as the development of synthetic analogs and derivatives.<br /> <br /> {{Antibiotics}}<br /> {{Macrolides}}<br /> [[Category:Antibiotics]]<br /> [[Category:Macrolides]]<br /> [[Category:Streptomyces]]<br /> {{pharmacology-stub}}</div>

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