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Structure of Watermelon mosaic virus potyvirus.Structure of Watermelon mosaic virus potyvirus.
Structural highlights
FunctionPublication Abstract from PubMedPotyviruses constitute the second largest genus of plant viruses and cause important economic losses in a large variety of crops; however, the atomic structure of their particles remains unknown. Infective potyvirus virions are long flexuous filaments where coat protein (CP) subunits assemble in helical mode bound to a monopartite positive-sense single-stranded RNA [(+)ssRNA] genome. We present the cryo-electron microscopy (cryoEM) structure of the potyvirus watermelon mosaic virus at a resolution of 4.0 A. The atomic model shows a conserved fold for the CPs of flexible filamentous plant viruses, including a universally conserved RNA binding pocket, which is a potential target for antiviral compounds. This conserved fold of the CP is widely distributed in eukaryotic viruses and is also shared by nucleoproteins of enveloped viruses with segmented (-)ssRNA (negative-sense ssRNA) genomes, including influenza viruses. Potyvirus virion structure shows conserved protein fold and RNA binding site in ssRNA viruses.,Zamora M, Mendez-Lopez E, Agirrezabala X, Cuesta R, Lavin JL, Sanchez-Pina MA, Aranda MA, Valle M Sci Adv. 2017 Sep 20;3(9):eaao2182. doi: 10.1126/sciadv.aao2182. eCollection 2017, Sep. PMID:28948231[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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