title: RNA polymerase activity in virions from Ustilago maydis.
abstract: RNA polymerase activity is associated with the double-stranded RNA virions of Ustilago maydis. The reaction products of the polymerase activity are single-stranded RNA molecules. The RNA molecules synthesized are homologous to the three classes of double-stranded RNA molecules that typify the viral genome. The single-stranded RNA synthesized is released from the virions. The molecular weight of the single-stranded RNA transcripts is about half the size of the double-stranded RNA segments, and thus, it appears that in the in vitro reaction, full-length transcripts can be obtained.
mesh_terms: D001487:Basidiomycota / Q000378:metabolism*; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism*; D005814:Genes, Viral; D008970:Molecular Weight; D012328:RNA Viruses / Q000235:genetics / Q000378:metabolism*; D012330:RNA, Double-Stranded / Q000378:metabolism; D012367:RNA, Viral / Q000235:genetics; D014158:Transcription, Genetic; D014588:Ustilago / Q000378:metabolism*
chemical_list: D012330:RNA, Double-Stranded; D012367:RNA, Viral; D012321:DNA-Directed RNA Polymerases