9NPX

SARS-CoV-2 nsp1 bound to the Rhinolophus lepidus 40S ribosomal subunit (local refinement of the 40S body)

9NPX の概要

• エントリーDOI: 10.2210/pdb9npx/pdb
• EMDBエントリー: 49635
• 分子名称: 40S ribosomal protein S2, 40S ribosomal protein S21, 40S ribosomal protein S23, ... (28 entities in total)
• 機能のキーワード: complex, ribosome, structural genomics, seattle structural genomics center for infectious disease, ssgcid
• 由来する生物種: Severe acute respiratory syndrome coronavirus 2; 詳細
• タンパク質・核酸の鎖数: 24
• 化学式量合計: 1041699.19

構造登録者

Gen, R.,Seattle Structural Genomics Center for Infectious Disease (SSGCID),Veesler, D. (登録日: 2025-03-11, 公開日: 2025-06-11, 最終更新日: 2025-07-30)

主引用文献

Gen, R.,Addetia, A.,Asarnow, D.,Park, Y.J.,Quispe, J.,Chan, M.C.,Brown, J.T.,Lee, J.,Campbell, M.G.,Lapointe, C.P.,Veesler, D.
SARS-CoV-2 nsp1 mediates broad inhibition of translation in mammals.
Cell Rep, 44:115696-115696, 2025

PubMed Abstract: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) non-structural protein 1 (nsp1) promotes innate immune evasion by inhibiting host translation in human cells. However, the role of nsp1 in other host species remains elusive, especially in bats-natural reservoirs of sarbecoviruses with a markedly different innate immune system than humans. We reveal that nsp1 potently inhibits translation in Rhinolophus lepidus bat cells, which belong to the same genus as known sarbecovirus reservoir hosts. We determined a cryoelectron microscopy structure of nsp1 bound to the R. lepidus 40S ribosomal subunit, showing that it blocks the mRNA entry channel by targeting a highly conserved site among mammals. Accordingly, we found that nsp1 blocked protein translation in mammalian cells from several species, underscoring its broadly inhibitory activity and conserved role in numerous SARS-CoV-2 hosts. Our findings illuminate the arms race between coronaviruses and mammalian host immunity, providing a foundation for understanding the determinants of viral maintenance in bat hosts and spillover.

PubMed: 40359110
DOI: 10.1016/j.celrep.2025.115696

実験手法

ELECTRON MICROSCOPY (2.1 Å)