DRB-induced Premature Termination of Late Adenovirus Transcription

Nature. 1978 Apr 13;272(5654):590-3. doi: 10.1038/272590a0.


Exposure of HeLa cells to 5,6-dichloro-1-beta-D-ribofuranosylbenzimidazde (DRB) late in the course of adenovirus 2 infection results in the inhibition of virus-specific RNA synthesis from all parts of the previously identified, very long (approximately 28 kilobases) late transcriptional unit, except for the first approximately 400-800 nucleotides. It is suggested that DRB acts not as an inhibitor of RNA chain initiation, but rather causes "premature" chain termination close to the promoter. A practical aspect of these findings may be that RNA sequences near promoter sites that are responsible for mRNA formation can be isolated from DRB-treated cells.

MeSH terms

  • Adenoviruses, Human / metabolism
  • Benzimidazoles / pharmacology*
  • Molecular Weight
  • RNA, Viral / biosynthesis*
  • Ribonucleosides / pharmacology*
  • Time Factors
  • Transcription, Genetic / drug effects*


  • Benzimidazoles
  • RNA, Viral
  • Ribonucleosides