Potato virus X RNA-mediated assembly of single-tailed ternary ‘coat protein–RNA–movement protein’ complexes

Different models have been proposed for the nature of the potexvirus transport form that moves from cell to cell over the infected plant: (i) genomic RNA moves as native virions; or (ii) in vitro -assembled non-virion ribonucleoprotein (RNP) complexes consisting of viral RNA, coat protein (CP) and movement protein (MP), termed TGBp1, serve as the transport form in vivo . As the structure of these RNPs has not been elucidated, the products...