Japan Agency for Medical Research and Development (AMED)
JP21am0101093
日本
Japan Agency for Medical Research and Development (AMED)
JP22ama121037
日本
Japan Science and Technology
JPMJCR20H8
日本
Japan Society for the Promotion of Science (JSPS)
JPJSCCA20190008
日本
Japan Society for the Promotion of Science (JSPS)
20H05773
日本
Japan Society for the Promotion of Science (JSPS)
JP20H05873
日本
引用
ジャーナル: Nat Commun / 年: 2024 タイトル: Structural basis for receptor-binding domain mobility of the spike in SARS-CoV-2 BA.2.86 and JN.1. 著者: Hisano Yajima / Yuki Anraku / Yu Kaku / Kanako Terakado Kimura / Arnon Plianchaisuk / Kaho Okumura / Yoshiko Nakada-Nakura / Yusuke Atarashi / Takuya Hemmi / Daisuke Kuroda / Yoshimasa ...著者: Hisano Yajima / Yuki Anraku / Yu Kaku / Kanako Terakado Kimura / Arnon Plianchaisuk / Kaho Okumura / Yoshiko Nakada-Nakura / Yusuke Atarashi / Takuya Hemmi / Daisuke Kuroda / Yoshimasa Takahashi / Shunsuke Kita / Jiei Sasaki / Hiromi Sumita / / Jumpei Ito / Katsumi Maenaka / Kei Sato / Takao Hashiguchi / 要旨: Since 2019, SARS-CoV-2 has undergone mutations, resulting in pandemic and epidemic waves. The SARS-CoV-2 spike protein, crucial for cellular entry, binds to the ACE2 receptor exclusively when its ...Since 2019, SARS-CoV-2 has undergone mutations, resulting in pandemic and epidemic waves. The SARS-CoV-2 spike protein, crucial for cellular entry, binds to the ACE2 receptor exclusively when its receptor-binding domain (RBD) adopts the up-conformation. However, whether ACE2 also interacts with the RBD in the down-conformation to facilitate the conformational shift to RBD-up remains unclear. Herein, we present the structures of the BA.2.86 and the JN.1 spike proteins bound to ACE2. Notably, we successfully observed the ACE2-bound down-RBD, indicating an intermediate structure before the RBD-up conformation. The wider and mobile angle of RBDs in the up-state provides space for ACE2 to interact with the down-RBD, facilitating the transition to the RBD-up state. The K356T, but not N354-linked glycan, contributes to both of infectivity and neutralizing-antibody evasion in BA.2.86. These structural insights the spike-protein dynamics would help understand the mechanisms underlying SARS-CoV-2 infection and its neutralization.