National Natural Science Foundation of China (NSFC)
32200996
中国
National Natural Science Foundation of China (NSFC)
32171217
中国
引用
ジャーナル: Nat Struct Mol Biol / 年: 2024 タイトル: An oligopeptide permease, OppABCD, requires an iron-sulfur cluster domain for functionality. 著者: Xiaolin Yang / Tianyu Hu / Jingxi Liang / Zhiqi Xiong / Zhenli Lin / Yao Zhao / Xiaoting Zhou / Yan Gao / Shan Sun / Xiuna Yang / Luke W Guddat / Haitao Yang / Zihe Rao / Bing Zhang / 要旨: Oligopeptide permease, OppABCD, belongs to the type I ABC transporter family. Its role is to import oligopeptides into bacteria for nutrient uptake and to modulate the host immune response. OppABCD ...Oligopeptide permease, OppABCD, belongs to the type I ABC transporter family. Its role is to import oligopeptides into bacteria for nutrient uptake and to modulate the host immune response. OppABCD consists of a cluster C substrate-binding protein (SBP), OppA, membrane-spanning OppB and OppC subunits, and an ATPase, OppD, that contains two nucleotide-binding domains (NBDs). Here, using cryo-electron microscopy, we determined the high-resolution structures of Mycobacterium tuberculosis OppABCD in the resting state, oligopeptide-bound pre-translocation state, AMPPNP-bound pre-catalytic intermediate state and ATP-bound catalytic intermediate state. The structures show an assembly of a cluster C SBP with its ABC translocator and a functionally required [4Fe-4S] cluster-binding domain in OppD. Moreover, the ATP-bound OppABCD structure has an outward-occluded conformation, although no substrate was observed in the transmembrane cavity. Here, we reveal an oligopeptide recognition and translocation mechanism of OppABCD, which provides a perspective on how this and other type I ABC importers facilitate bulk substrate transfer across the lipid bilayer.
UncharacterizedproteinRv1280c / Oligopeptide-binding protein OppA
分子量: 64609.340 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: Author stated: The data collection statistics was calculated within the same resolution range as the refinement. The number of collected unique reflections was 39151. After anisotropic ...詳細: Author stated: The data collection statistics was calculated within the same resolution range as the refinement. The number of collected unique reflections was 39151. After anisotropic correction using the STARANISO server and refinement using PHENIX, the number of unique reflections was 29132. 由来: (組換発現) Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv) (結核菌) 遺伝子: Rv1280c, MTCY50.02 発現宿主: Mycolicibacterium smegmatis MC2 155 (バクテリア) 参照: UniProt: P9WGU5