Cryo-EM structure of E.coli spermidine transporter PotD-PotABC in translocation intermidiate state
マップデータ
試料
複合体: ABC transporter
タンパク質・ペプチド: Spermidine/putrescine import ATP-binding protein PotA
タンパク質・ペプチド: Spermidine/putrescine transport system permease protein PotB
タンパク質・ペプチド: Spermidine/putrescine transport system permease protein PotC
タンパク質・ペプチド: Putrescine-binding periplasmic protein
リガンド: ADENOSINE-5'-TRIPHOSPHATE
リガンド: MAGNESIUM ION
キーワード
ABC transporter / TRANSPORT PROTEIN
機能・相同性
機能・相同性情報
ABC-type polyamine transporter / ABC-type putrescine transporter activity / spermidine transmembrane transport / polyamine binding / polyamine transport / putrescine transport / ABC-type polyamine transporter activity / ATP-binding cassette (ABC) transporter complex / outer membrane-bounded periplasmic space / nucleotide binding ...ABC-type polyamine transporter / ABC-type putrescine transporter activity / spermidine transmembrane transport / polyamine binding / polyamine transport / putrescine transport / ABC-type polyamine transporter activity / ATP-binding cassette (ABC) transporter complex / outer membrane-bounded periplasmic space / nucleotide binding / ATP hydrolysis activity / ATP binding / membrane / plasma membrane 類似検索 - 分子機能
Spermidine/putrescine import ATP-binding protein potA family profile. / Spermidine/putrescine ABC transporter, ATP-binding subunit / PotA, ATP-binding domain / : / : / Spermidine/putrescine-binding periplasmic protein / Transport-associated OB, type 2 / TOBE domain / Molybdate/tungstate binding, C-terminal / ABC transporter type 1, transmembrane domain MetI-like ...Spermidine/putrescine import ATP-binding protein potA family profile. / Spermidine/putrescine ABC transporter, ATP-binding subunit / PotA, ATP-binding domain / : / : / Spermidine/putrescine-binding periplasmic protein / Transport-associated OB, type 2 / TOBE domain / 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. / Bacterial extracellular solute-binding protein / Bacterial extracellular solute-binding protein / 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. / 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
Putrescine-binding periplasmic protein / Spermidine/putrescine transport system permease protein PotC / Spermidine/putrescine import ATP-binding protein PotA 類似検索 - 構成要素
ジャーナル: Sci Adv / 年: 2024 タイトル: Structural insights into polyamine spermidine uptake by the ABC transporter PotD-PotABC. 著者: Zhu Qiao / Phong Hoa Do / Joshua Yi Yeo / Rya Ero / Zhuowen Li / Liying Zhan / Sandip Basak / Yong-Gui Gao / 要旨: Polyamines, characterized by their polycationic nature, are ubiquitously present in all organisms and play numerous cellular functions. Among polyamines, spermidine stands out as the predominant type ...Polyamines, characterized by their polycationic nature, are ubiquitously present in all organisms and play numerous cellular functions. Among polyamines, spermidine stands out as the predominant type in both prokaryotic and eukaryotic cells. The PotD-PotABC protein complex in , belonging to the adenosine triphosphate-binding cassette transporter family, is a spermidine-preferential uptake system. Here, we report structural details of the polyamine uptake system PotD-PotABC in various states. Our analyses reveal distinct "inward-facing" and "outward-facing" conformations of the PotD-PotABC transporter, as well as conformational changes in the "gating" residues (F222, Y223, D226, and K241 in PotB; Y219 and K223 in PotC) controlling spermidine uptake. Therefore, our structural analysis provides insights into how the PotD-PotABC importer recognizes the substrate-binding protein PotD and elucidates molecular insights into the spermidine uptake mechanism of bacteria.