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基本情報
登録情報 | データベース: PDB / ID: 9fv4 | ||||||||||||
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タイトル | MsbA in peptidisc inward-facing narrow (-) open | ||||||||||||
![]() | ATP-dependent lipid A-core flippase | ||||||||||||
![]() | TRANSPORT PROTEIN / ABC transporter | ||||||||||||
機能・相同性 | ![]() MsbA transporter complex / lipopolysaccharide floppase activity / lipid translocation / ABC-type lipid A-core oligosaccharide transporter / lipopolysaccharide transport / ATPase-coupled lipid transmembrane transporter activity / ABC-type xenobiotic transporter activity / lipid transport / ATP-binding cassette (ABC) transporter complex / transmembrane transport ...MsbA transporter complex / lipopolysaccharide floppase activity / lipid translocation / ABC-type lipid A-core oligosaccharide transporter / lipopolysaccharide transport / ATPase-coupled lipid transmembrane transporter activity / ABC-type xenobiotic transporter activity / lipid transport / ATP-binding cassette (ABC) transporter complex / transmembrane transport / lipid binding / ATP hydrolysis activity / ATP binding / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能 | ||||||||||||
生物種 | ![]() ![]() | ||||||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.8 Å | ||||||||||||
![]() | Hoffmann, L. / Baier, A. / Jorde, L. / Kamel, M. / Schaefer, J. / Schnelle, K. / Scholz, A. / Shvarev, D. / Wong, J. / Parey, K. ...Hoffmann, L. / Baier, A. / Jorde, L. / Kamel, M. / Schaefer, J. / Schnelle, K. / Scholz, A. / Shvarev, D. / Wong, J. / Parey, K. / Januliene, D. / Moeller, A. | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: The ABC transporter MsbA in a dozen environments. 著者: Lea Hoffmann / Anika Baier / Lara Jorde / Michael Kamel / Jan-Hannes Schäfer / Kilian Schnelle / Alischa Scholz / Dmitry Shvarev / Jaslyn E M M Wong / Kristian Parey / Dovile Januliene / Arne Moeller / ![]() 要旨: High-resolution structure determination of membrane proteins typically requires reconstitution into artificial membrane mimics. The choice of the specific membrane substitute can strongly affect the ...High-resolution structure determination of membrane proteins typically requires reconstitution into artificial membrane mimics. The choice of the specific membrane substitute can strongly affect the protein's specific activity, stability, and conformational spectrum, potentially leading to errors or misinterpretation during analysis. The bacterial ATP-binding cassette transporter MsbA is a prominent example of such environment-specific bias. Here, we present a systematic analysis of the conformational spectrum of MsbA, stabilized in a dozen environments, using cryoelectron microscopy (cryo-EM), and show pronounced feedback between the membrane mimetics and the transporter. Detergents generally favor wide inward-facing conformations while nanodiscs induce narrower conformations. Notably, only in three tested environments, MsbA samples the full movement of the nucleotide-binding domains, including narrow and wide conformations. We expect this study to serve as a blueprint for other membrane proteins, even where a structural reaction to the hydrophobic environment is not directly visible but still critical for the proteins' function. | ||||||||||||
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-関連構造データ
関連構造データ | ![]() 50788MC ![]() 9fuqC ![]() 9furC ![]() 9fusC ![]() 9futC ![]() 9fuuC ![]() 9fuvC ![]() 9fuwC ![]() 9fuyC ![]() 9fuzC ![]() 9fv0C ![]() 9fv1C ![]() 9fv2C ![]() 9fv3C ![]() 9fv5C ![]() 9fv6C ![]() 9fv7C ![]() 9fv8C ![]() 9fv9C ![]() 9fvaC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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要素
#1: タンパク質 | 分子量: 64530.543 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() 参照: UniProt: P60752, ABC-type lipid A-core oligosaccharide transporter #2: 化合物 | ChemComp-JSG / ( | |
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