• Journal of virology · Jul 2001

    Viral replicase gene products suffice for coronavirus discontinuous transcription.

    • V Thiel, J Herold, B Schelle, and S G Siddell.
    • Institute of Virology and Immunology, University of Würzburg, 97078 Würzburg, Germany. v.thiel@mail.uni-wuerzburg.de
    • J. Virol. 2001 Jul 1; 75 (14): 6676-81.

    AbstractWe have used vaccinia virus as a vector to clone a 22.5-kbp cDNA that represents the 5' and 3' ends of the human coronavirus 229E (HCoV 229E) genome, the HCoV 229E replicase gene, and a single reporter gene (coding for green fluorescent protein [GFP]) located downstream of a regulatory element for coronavirus mRNA transcription. When RNA transcribed from this cDNA was transfected into BHK-21 cells, a small percentage of cells displayed strong fluorescence. A region of the mRNA encoding GFP was amplified by PCR and shown to have the unique mRNA leader-body junction indicative of coronavirus-mediated transcription. These data show that the coronavirus replicase gene products suffice for discontinuous subgenomic mRNA transcription.

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