- PDB-5nc5: Crystal structure of AcrBZ in complex with antibiotic puromycin -
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基本情報
登録情報
データベース: PDB / ID: 5nc5
タイトル
Crystal structure of AcrBZ in complex with antibiotic puromycin
要素
(Multidrug efflux pump ...) x 2
DARPin
キーワード
TRANSPORT PROTEIN / Membrane transporter / Multidrug efflux pump
機能・相同性
機能・相同性情報
alkane transmembrane transporter activity / alkane transport / enterobactin transport / enterobactin transmembrane transporter activity / xenobiotic detoxification by transmembrane export across the cell outer membrane / periplasmic side of plasma membrane / efflux pump complex / xenobiotic detoxification by transmembrane export across the plasma membrane / bile acid transmembrane transporter activity / xenobiotic transport ...alkane transmembrane transporter activity / alkane transport / enterobactin transport / enterobactin transmembrane transporter activity / xenobiotic detoxification by transmembrane export across the cell outer membrane / periplasmic side of plasma membrane / efflux pump complex / xenobiotic detoxification by transmembrane export across the plasma membrane / bile acid transmembrane transporter activity / xenobiotic transport / bile acid and bile salt transport / efflux transmembrane transporter activity / xenobiotic transmembrane transporter activity / fatty acid transport / response to toxic substance / response to xenobiotic stimulus / response to antibiotic / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能
ジャーナル: Elife / 年: 2017 タイトル: An allosteric transport mechanism for the AcrAB-TolC multidrug efflux pump. 著者: Zhao Wang / Guizhen Fan / Corey F Hryc / James N Blaza / Irina I Serysheva / Michael F Schmid / Wah Chiu / Ben F Luisi / Dijun Du / 要旨: Bacterial efflux pumps confer multidrug resistance by transporting diverse antibiotics from the cell. In Gram-negative bacteria, some of these pumps form multi-protein assemblies that span the cell ...Bacterial efflux pumps confer multidrug resistance by transporting diverse antibiotics from the cell. In Gram-negative bacteria, some of these pumps form multi-protein assemblies that span the cell envelope. Here, we report the near-atomic resolution cryoEM structures of the AcrAB-TolC multidrug efflux pump in resting and drug transport states, revealing a quaternary structural switch that allosterically couples and synchronizes initial ligand binding with channel opening. Within the transport-activated state, the channel remains open even though the pump cycles through three distinct conformations. Collectively, our data provide a dynamic mechanism for the assembly and operation of the AcrAB-TolC pump.