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The Glycolytic Pyruvate Kinase Is Recruited Directly into the Viral Replicase Complex to Generate ATP for RNA Synthesis

机译:将糖酵解丙酮酸激酶直接募集到病毒复制酶复合物中以产生ATP,用于RNA合成

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摘要

Viruses accomplish their replication by exploiting many cellular resources, including metabolites and energy. Similarly to other (+) RNA viruses, tomato bushy stunt virus (TBSV) induces major changes in infected cells. However, the source of energy required to fuel TBSV replication is unknown. We find that TBSV co-opts the cellular glycolytic ATP-generating pyruvate kinase (PK) directly into the viral replicase complex to boost progeny RNA synthesis. The co-opted PK generates high levels of ATP within the viral replication compartment at the expense of a reduction in cytosolic ATP pools. The ATP generated by the co-opted PK is used to promote the helicase activity of recruited cellular DEAD-box helicases, which are involved in the production of excess viral (+) RNA progeny. Altogether, recruitment of PK and local production of ATP within the replication compartment allow the virus replication machinery an access to plentiful ATP, facilitating robust virus replication.
机译:病毒通过利用许多细胞资源来完成它们的复制,包括代谢物和能量。 与其他(+)RNA病毒类似,番茄伯利特技病毒(TBSV)诱导受感染细胞的主要变化。 然而,燃料TBSV复制所需的能量来源是未知的。 我们发现TBSV将细胞糖酵解ATP生成丙酮酸激酶(PK)直接与病毒复制酶复合物中加入到病毒复制酶复合物中以促进后代RNA合成。 Co-Opted PK在病毒复制隔室内产生高水平的ATP,以牺牲细胞溶质ATP池的减少为代价。 由共选择的PK产生的ATP用于促进募集的细胞死箱螺旋酶的螺旋酶活性,其参与产生过量病毒(+)RNA后代的产生。 在复制隔间内完全招募PK和局部ATP的ATP允许病毒复制机械访问丰富的ATP,促进鲁棒病毒复制。

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