- EMDB-49659: Cryo-EM structure of a bacterial prototype ATP-binding cassette t... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-49659
タイトル
Cryo-EM structure of a bacterial prototype ATP-binding cassette transporter MalFGK2.
マップデータ
試料
複合体: ATP-binding cassette transporter MalFGK2
タンパク質・ペプチド: Maltose/maltodextrin import ATP-binding protein MalK
タンパク質・ペプチド: Maltose/maltodextrin transport system permease protein MalF
タンパク質・ペプチド: Maltose/maltodextrin transport system permease protein MalG
リガンド: MAGNESIUM ION
リガンド: ADENOSINE-5'-DIPHOSPHATE
リガンド: VANADATE ION
キーワード
bacterial prototype ATP-binding cassette transporter / TRANSPORT PROTEIN
機能・相同性
機能・相同性情報
ABC-type maltose transporter / ABC-type maltose transporter activity / negative regulation of maltose transport / enzyme IIA-maltose transporter complex / negative regulation of transmembrane transport / maltose transport complex / maltose transport / maltodextrin transmembrane transport / ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing / ATP-binding cassette (ABC) transporter complex ...ABC-type maltose transporter / ABC-type maltose transporter activity / negative regulation of maltose transport / enzyme IIA-maltose transporter complex / negative regulation of transmembrane transport / maltose transport complex / maltose transport / maltodextrin transmembrane transport / ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing / ATP-binding cassette (ABC) transporter complex / DNA-binding transcription factor binding / DNA damage response / ATP hydrolysis activity / ATP binding / membrane / plasma membrane 類似検索 - 分子機能
Maltose transport system permease protein MalF, P2 domain / MalF, N-terminal / : / : / Maltose transport system permease protein MalF P2 domain / MalF, N-terminal region, transmembrane helices / Maltose/Maltodextrin import ATP-binding protein malK family profile. / Transport-associated OB, type 2 / TOBE domain / : ...Maltose transport system permease protein MalF, P2 domain / MalF, N-terminal / : / : / Maltose transport system permease protein MalF P2 domain / MalF, N-terminal region, transmembrane helices / Maltose/Maltodextrin import ATP-binding protein malK family profile. / Transport-associated OB, type 2 / TOBE domain / : / ABC transporter, maltose/maltodextrin import, MalK-like / : / Molybdate/tungstate binding, C-terminal / ABC transporter type 1, transmembrane domain MetI-like / MetI-like superfamily / Binding-protein-dependent transport system inner membrane component / ABC transporter integral membrane type-1 domain profile. / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain / ATP-binding cassette, ABC transporter-type domain profile. / Nucleic acid-binding, OB-fold / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
Maltose/maltodextrin transport system permease protein MalF / Maltose/maltodextrin transport system permease protein MalG / Maltose/maltodextrin import ATP-binding protein MalK 類似検索 - 構成要素
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
DP2GM140920
米国
引用
ジャーナル: Nat Commun / 年: 2025 タイトル: DeFrND: detergent-free reconstitution into native nanodiscs with designer membrane scaffold peptides. 著者: Qian Ren / Jing Wang / Vinay Idikuda / Shanwen Zhang / Jeehae Shin / W Grant Ludlam / Luis M Real Hernandez / Sara Zdancewicz / Alex J B Kreutzberger / Hucheng Chang / Volker Kiessling / ...著者: Qian Ren / Jing Wang / Vinay Idikuda / Shanwen Zhang / Jeehae Shin / W Grant Ludlam / Luis M Real Hernandez / Sara Zdancewicz / Alex J B Kreutzberger / Hucheng Chang / Volker Kiessling / Lukas K Tamm / Ahmad Jomaa / Ilya Levental / Kirill Martemyanov / Baron Chanda / Huan Bao / 要旨: Membrane scaffold protein-based nanodiscs have facilitated unprecedented structural and biophysical analysis of membrane proteins in a near-native lipid environment. However, successful ...Membrane scaffold protein-based nanodiscs have facilitated unprecedented structural and biophysical analysis of membrane proteins in a near-native lipid environment. However, successful reconstitution of membrane proteins in nanodiscs requires prior solubilization and purification in detergents, which may impact their physiological structure and function. Furthermore, the detergent-mediated reconstitution of nanodiscs is unlikely to recapitulate the precise composition or asymmetry of native membranes. To circumvent this fundamental limitation of traditional nanodisc technology, we herein describe the development of membrane-solubilizing peptides to directly extract membrane proteins from native cell membranes into nanoscale discoids. By systematically protein engineering and screening, we create a class of chemically modified Apolipoprotein-A1 mimetic peptides to enable the formation of detergent-free nanodiscs with high efficiency. Nanodiscs generated with these engineered membrane scaffold peptides are suitable for obtaining high-resolution structures using single-particle cryo-EM with native lipids. To further highlight the versatility of our approach, we directly extract a sampling of membrane signaling proteins with their surrounding native membranes for biochemical and biophysical interrogations.