title: [Satellite RNA (RNA3) of tomato black ring virus is found with one of the 2 major RNAs (RNA2) in a new capsid nucleoprotein].
abstract: Tomato Black Ring Virus (TBRV) like other NEPOviruses posseses two nucleoproteins M and B and two major RNAs, RNA1 and RNA2 respectively distributed in B and M. A new nucleoprotein has just been discovered and comprises one molecule of RNA2 associated with one molecule of RNA3. RNA3 is a small RNA of molecular weight 500,000 d considered to be a satellite RNA. Its level appears to depend on the infection stage, local or systemic. RNA3 is able to modify the relative proportions of nucleoproteins M and B and their respective RNAs. The satellite RNA, might be part of the genome and represent a monocistronic mRNA for protein capsid synthesis. However it seems perhaps more tempting to correlate TBRV-RNA3 with satellite RNA5 of certain strains of Cucumber mosaic virus.
mesh_terms: D002213:Capsid / Q000032:analysis*; D009698:Nucleoproteins / Q000032:analysis*; D010942:Plant Viruses / Q000032:analysis*; D012367:RNA, Viral / Q000302:isolation & purification*; D012261:Ribonucleoproteins / Q000032:analysis*; D014764:Viral Proteins / Q000032:analysis*
chemical_list: D009698:Nucleoproteins; D012367:RNA, Viral; D012261:Ribonucleoproteins; D014764:Viral Proteins
vernacular_title: Le RNA satellite (RNA3) du virus des anneaux noirs de la Tomate est encapsidé avec l'un des deux RNA majeurs (RNA2) dans une nouvelle nucléoprotéine.