By Hiroshi Handa, Yuki Yamaguchi
Hepatitis Delta Virus is an up to date consultant to hepatitis D virus (HDV), a human virus with a couple of detailed beneficial properties. each one bankruptcy of this publication describes one of many extensive facets of HDV from virology to molecular biology, and from prognosis to remedy.
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Additional info for Hepatitis Delta Virus (Medical Intelligence Unit)
After all, the transcripts are being made from a RNA rather than a DNA template. How does this Structure and Replication ofHepatitis Delta Virus RNA polyadenylation compare with the typical polyadenylation of DNA-directed RNA transcripts? In early experiments this question was addressed but at the time, there was a much less clear picture of what is required. Now for example, we would consider it likely that transcription will proceed much further beyond the CA acceptor site before there is (i) pausing, (ii) separation of the polymerase from the template, (iii) endonucleolytic cleavage of the paused RNA, and (iv) specific cleavage at the CA site, (v) finally followed by polyadenylation.
First, the authors try to incorporate their interpretation that while the mRNA and genome are transcribed by pol II, they consider that the antigenomic RNA is transcribed by a different polymerase, possibly pol I. This then leads the authors to indicate that the genomic RNA can serve as template for two polymerases; pol II copies it to produce mRNA then this same template is used by pol I. The authors do not discuss how it might be that the same 32 Hepatitis Delta Virus template can be transcribed by alternative polymerases.
Molecular cloning of hepatitis delta virus RNA from an infected woodchuck liver: Sequence, structure, and applications. J Virol 1988; 62:1855-1861. 14. Gudima S, W u S-Y, Chiang C-M et al. Origin of the hepatitis delta virus mRNA. J Virol 2000; 74:7204-7210. 15. Hsieh S-Y, Chao M, Coates L et al. Hepatitis delta virus genome replication: A polyadenylated mRNA for delta antigen. J Virol 1990; 64:3192-3198. 16. Chen P-J, Kalpana G, Goldberg J et al. Structure and replication of the genome of hepatitis 6 virus.