Expansion of poxvirus RNA polymerase subunits sharing homology with corresponding subunits of RNA polymerase II - PubMed (original) (raw)

Expansion of poxvirus RNA polymerase subunits sharing homology with corresponding subunits of RNA polymerase II

Bruce A Knutson et al. Virus Genes. 2008 Apr.

Abstract

Poxvirus-encoded RNA polymerases were known previously to share extensive sequence homology in their two largest subunits with the corresponding subunits of cellular RNA polymerases and a modest alignment between the smallest poxvirus subunit and RBP10 of RNA polymerase II. The remaining subunits had no apparent cellular homologs. In this study, the HHpred program that combines amino acid sequence alignments with secondary structure predictions was used to search for homologs to the poxvirus RNA polymerase subunits. Significant matches of vaccinia RNA polymerase 22-, 19-, and 18-kDa subunits to RNA polymerase II subunits RPB5, 6, and 7, respectively, were identified. These results strengthen the concept that poxviral RNA polymerases likely evolved from cellular RNA polymerases.

PubMed Disclaimer

Similar articles

Cited by

References

    1. Science. 2001 Jun 8;292(5523):1876-82 - PubMed
    1. Cell. 2002 Feb 22;108(4):453-63 - PubMed
    1. Proc Natl Acad Sci U S A. 1986 May;83(10):3141-5 - PubMed
    1. J Gen Virol. 2003 Sep;84(Pt 9):2293-2303 - PubMed
    1. Nucleic Acids Res. 2005 Jul 1;33(Web Server issue):W244-8 - PubMed

MeSH terms

Substances

LinkOut - more resources