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Deprecated: Implicit conversion from float 235.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Science 2020 ; 369 (6509): 1395-1398 Nephropedia Template TP
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A molecular pore spans the double membrane of the coronavirus replication organelle #MMPMID32763915
Wolff G; Limpens RWAL; Zevenhoven-Dobbe JC; Laugks U; Zheng S; de Jong AWM; Koning RI; Agard DA; Grunewald K; Koster AJ; Snijder EJ; Barcena M
Science 2020[Sep]; 369 (6509): 1395-1398 PMID32763915show ga
Coronavirus genome replication is associated with virus-induced cytosolic double-membrane vesicles, which may provide a tailored microenvironment for viral RNA synthesis in the infected cell. However, it is unclear how newly synthesized genomes and messenger RNAs can travel from these sealed replication compartments to the cytosol to ensure their translation and the assembly of progeny virions. In this study, we used cellular cryo-electron microscopy to visualize a molecular pore complex that spans both membranes of the double-membrane vesicle and would allow export of RNA to the cytosol. A hexameric assembly of a large viral transmembrane protein was found to form the core of the crown-shaped complex. This coronavirus-specific structure likely plays a key role in coronavirus replication and thus constitutes a potential drug target.