Japan Agency for Medical Research and Development (AMED)
JP21am0101117
日本
Japan Agency for Medical Research and Development (AMED)
JP22ama121003
日本
Japan Agency for Medical Research and Development (AMED)
JP17pc0101020
日本
JEOL YOKOGUSHI Research Alliance Laboratories of Osaka University
日本
Institute for Protein Research, Osaka University
CR-20-02
日本
Institute for Protein Research, Osaka University
CR-21-02
日本
Japan Agency for Medical Research and Development (AMED)
JP21am0101070
日本
G-7 Scholarship Foundation
引用
ジャーナル: Nat Commun / 年: 2023 タイトル: Structures of a FtsZ single protofilament and a double-helical tube in complex with a monobody. 著者: Junso Fujita / Hiroshi Amesaka / Takuya Yoshizawa / Kota Hibino / Natsuki Kamimura / Natsuko Kuroda / Takamoto Konishi / Yuki Kato / Mizuho Hara / Tsuyoshi Inoue / Keiichi Namba / Shun-Ichi ...著者: Junso Fujita / Hiroshi Amesaka / Takuya Yoshizawa / Kota Hibino / Natsuki Kamimura / Natsuko Kuroda / Takamoto Konishi / Yuki Kato / Mizuho Hara / Tsuyoshi Inoue / Keiichi Namba / Shun-Ichi Tanaka / Hiroyoshi Matsumura / 要旨: FtsZ polymerizes into protofilaments to form the Z-ring that acts as a scaffold for accessory proteins during cell division. Structures of FtsZ have been previously solved, but detailed mechanistic ...FtsZ polymerizes into protofilaments to form the Z-ring that acts as a scaffold for accessory proteins during cell division. Structures of FtsZ have been previously solved, but detailed mechanistic insights are lacking. Here, we determine the cryoEM structure of a single protofilament of FtsZ from Klebsiella pneumoniae (KpFtsZ) in a polymerization-preferred conformation. We also develop a monobody (Mb) that binds to KpFtsZ and FtsZ from Escherichia coli without affecting their GTPase activity. Crystal structures of the FtsZ-Mb complexes reveal the Mb binding mode, while addition of Mb in vivo inhibits cell division. A cryoEM structure of a double-helical tube of KpFtsZ-Mb at 2.7 Å resolution shows two parallel protofilaments. Our present study highlights the physiological roles of the conformational changes of FtsZ in treadmilling that regulate cell division.