7p4h
Crystal Structure of Monoamine Oxidase B in complex with inhibitor (+)-2Crystal Structure of Monoamine Oxidase B in complex with inhibitor (+)-2
Structural highlights
FunctionAOFB_HUMAN Catalyzes the oxidative deamination of biogenic and xenobiotic amines and has important functions in the metabolism of neuroactive and vasoactive amines in the central nervous system and peripheral tissues. MAOB preferentially degrades benzylamine and phenylethylamine. Publication Abstract from PubMedMultitarget directed ligands (MTDLs) represent a promising frontier in tackling the complexity of multifactorial pathologies. The synergistic inhibition of monoamine oxidase B (MAO B) and acetylcholinesterase (AChE) is believed to provide a potentiated effect in the treatment of Alzheimer's disease. Among previously reported micromolar or sub-micromolar coumarin-bearing dual inhibitors, compound 1 returned a tight-binding inhibition of MAO B (K i = 4.5 muM) and a +5.5 degrees C increase in the enzyme T m value. Indeed, the X-ray crystal structure revealed that binding of 1 produces unforeseen conformational changes at the MAO B entrance cavity. Interestingly, 1 showed great shape complementarity with the AChE enzymatic gorge, being deeply buried from the catalytic anionic subsite (CAS) to the peripheral anionic subsite (PAS) and causing significant structural changes in the active site. These findings provide structural templates for further development of dual MAO B and AChE inhibitors. Dual Reversible Coumarin Inhibitors Mutually Bound to Monoamine Oxidase B and Acetylcholinesterase Crystal Structures.,Ekstrom F, Gottinger A, Forsgren N, Catto M, Iacovino LG, Pisani L, Binda C ACS Med Chem Lett. 2022 Feb 18;13(3):499-506. doi:, 10.1021/acsmedchemlett.2c00001. eCollection 2022 Mar 10. PMID:35300078[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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