MEMBRANE PROTEIN / multidrug efflux pump / membrane transporter
機能・相同性
機能・相同性情報
MacAB-TolC complex / 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 ...MacAB-TolC complex / 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 / porin activity / monoatomic ion channel activity / efflux transmembrane transporter activity / transmembrane transporter activity / xenobiotic transmembrane transporter activity / fatty acid transport / cell outer membrane / : / response to toxic substance / outer membrane-bounded periplasmic space / monoatomic ion transmembrane transport / response to xenobiotic stimulus / response to antibiotic / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能
: / Multidrug efflux pump accessory protein AcrZ / Multidrug efflux pump-associated protein AcrZ / : / Type I secretion outer membrane protein, TolC / : / Cation efflux system protein CusB, domain 1 / Cation efflux system protein CusB domain 1 / RND efflux pump, membrane fusion protein / RND efflux pump, membrane fusion protein, barrel-sandwich domain ...: / Multidrug efflux pump accessory protein AcrZ / Multidrug efflux pump-associated protein AcrZ / : / Type I secretion outer membrane protein, TolC / : / Cation efflux system protein CusB, domain 1 / Cation efflux system protein CusB domain 1 / RND efflux pump, membrane fusion protein / RND efflux pump, membrane fusion protein, barrel-sandwich domain / Barrel-sandwich domain of CusB or HlyD membrane-fusion / Outer membrane efflux protein / Outer membrane efflux protein / Hydrophobe/amphiphile efflux-1 HAE1 / Multidrug efflux transporter AcrB TolC docking domain, DN/DC subdomains / Acriflavin resistance protein / AcrB/AcrD/AcrF family / Prokaryotic membrane lipoprotein lipid attachment site profile. 類似検索 - ドメイン・相同性
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.