Multidrug efflux pump subunit AcrB / NCMN / TRANSPORT PROTEIN
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 / bile acid transmembrane transporter activity / xenobiotic transport / bile acid and bile salt 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 / 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
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
1R01GM132329
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
1R35GM133598
米国
引用
ジャーナル: Chem Sci / 年: 2023 タイトル: pH-tunable membrane-active polymers, NCMNP2a-, and their potential membrane protein applications. 著者: Thi Kim Hoang Trinh / Andres Jorge Cabezas / Soumil Joshi / Claudio Catalano / Abu Bakkar Siddique / Weihua Qiu / Sanket Deshmukh / Amedee des Georges / Youzhong Guo / 要旨: Accurate 3D structures of membrane proteins are essential for comprehending their mechanisms of action and designing specific ligands to modulate their activities. However, these structures are still ...Accurate 3D structures of membrane proteins are essential for comprehending their mechanisms of action and designing specific ligands to modulate their activities. However, these structures are still uncommon due to the involvement of detergents in the sample preparation. Recently, membrane-active polymers have emerged as an alternative to detergents, but their incompatibility with low pH and divalent cations has hindered their efficacy. Herein, we describe the design, synthesis, characterization, and application of a new class of pH-tunable membrane-active polymers, NCMNP2a-. The results demonstrated that NCMNP2a- could be used for high-resolution single-particle cryo-EM structural analysis of AcrB in various pH conditions and can effectively solubilize TSPO with the function preserved. Molecular dynamic simulation is consistent with experimental data that shed great insights into the working mechanism of this class of polymers. These results demonstrated that NCMNP2a- might have broad applications in membrane protein research.