Organization of the Flavivirus RNA replicase complex.
Organization of the Flavivirus RNA replicase complex.
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DOI:
10.1002/wrna.1437
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发表时间:
2017-11
期刊:
影响因子:
--
通讯作者:
Geiss BJ
中科院分区:
文献类型:
--
作者:
Brand C;Bisaillon M;Geiss BJ
Flaviviruses, such as Dengue, Japanese encephalitis, West Nile, Yellow Fever, and Zika viruses, are serious human pathogens that cause significant morbidity and mortality globally each year. Flaviviruses are single-stranded, positive-sense RNA viruses, and encode two multidomain proteins, NS3 and NS5, that possess all enzymatic activities required for genome replication and capping. NS3 and NS5 interact within virus-induced replication compartments to form the RNA genome replicase complex. Although the individual enzymatic activities of both proteins have been extensively studied and are well characterized, there are still gaps in our understanding of how they interact to efficiently coordinate their respective activities during positive strand RNA synthesis and capping. Here, we discuss what is known about the structures and functions of the NS3 and NS5 proteins and propose a preliminary NS3:NS5:RNA interaction model based on a large body of literature about how the viral enzymes function, physical restraints between NS3 and NS5, as well as critical steps in the replication process.
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