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-Structure paper
| タイトル | The cryo-EM structure of the bd oxidase from M. tuberculosis reveals a unique structural framework and enables rational drug design to combat TB. |
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| ジャーナル・号・ページ | Nat Commun, Vol. 12, Issue 1, Page 5236, Year 2021 |
| 掲載日 | 2021年9月2日 |
著者 | Schara Safarian / Helen K Opel-Reading / Di Wu / Ahmad R Mehdipour / Kiel Hards / Liam K Harold / Melanie Radloff / Ian Stewart / Sonja Welsch / Gerhard Hummer / Gregory M Cook / Kurt L Krause / Hartmut Michel / ![]() |
| PubMed 要旨 | New drugs are urgently needed to combat the global TB epidemic. Targeting simultaneously multiple respiratory enzyme complexes of Mycobacterium tuberculosis is regarded as one of the most effective ...New drugs are urgently needed to combat the global TB epidemic. Targeting simultaneously multiple respiratory enzyme complexes of Mycobacterium tuberculosis is regarded as one of the most effective treatment options to shorten drug administration regimes, and reduce the opportunity for the emergence of drug resistance. During infection and proliferation, the cytochrome bd oxidase plays a crucial role for mycobacterial pathophysiology by maintaining aerobic respiration at limited oxygen concentrations. Here, we present the cryo-EM structure of the cytochrome bd oxidase from M. tuberculosis at 2.5 Å. In conjunction with atomistic molecular dynamics (MD) simulation studies we discovered a previously unknown MK-9-binding site, as well as a unique disulfide bond within the Q-loop domain that defines an inactive conformation of the canonical quinol oxidation site in Actinobacteria. Our detailed insights into the long-sought atomic framework of the cytochrome bd oxidase from M. tuberculosis will form the basis for the design of highly specific drugs to act on this enzyme. |
リンク | Nat Commun / PubMed:34475399 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.5 - 3.3 Å |
| 構造データ | EMDB-12451, PDB-7nkz: ![]() EMDB-12532: ![]() EMDB-12533: |
| 化合物 | ![]() ChemComp-OXY: ![]() ChemComp-MQ9: ![]() ChemComp-HDD: ![]() ChemComp-HEB: ![]() ChemComp-HOH: |
| 由来 |
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キーワード | MEMBRANE PROTEIN / Terminal oxidase Oxidoreductase Oxygen reductase bd oxidase |
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mycobacterium tuberculosis h37rv (結核菌)
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