The central player in the replication of RNA viruses is the viral RNA-dependent RNA polymerase. The 53 kDa poliovirus polymerase, together with other viral and possibly host proteins, carries out viral RNA replication in the host cell cytoplasm. RNA-dependent RNA polymerases comprise a distinct category of polymerases that have limited sequence similarity to reverse transcriptases (RNA-dependent DNA polymerases) and perhaps also to DNA-dependent polymerases ...
The central player in the replication of RNA viruses is the viral RNA-dependent RNA polymerase. The 53 kDa poliovirus polymerase, together with other viral and possibly host proteins, carries out viral RNA replication in the host cell cytoplasm. RNA-dependent RNA polymerases comprise a distinct category of polymerases that have limited sequence similarity to reverse transcriptases (RNA-dependent DNA polymerases) and perhaps also to DNA-dependent polymerases. Previously reported structures of RNA-dependent DNA polymerases, DNA-dependent DNA polymerases and a DNA-dependent RNA polymerase show that structural and evolutionary relationships exist between the different polymerase categories.
Related Citations:
Molecular Cloning of Poliovirus Cdna and Determination of the Complete Nucleotide Sequence of the Viral Genome Racaniello, V.R., Baltimore, D. (1981) Proc Natl Acad Sci U S A 78: 4887
Sequence of 1060 3'-Terminal Nucleotides of Poliovirus RNA as Determined by a Modification of the Dideoxynucleotide Method Kitamura, N., Wimmer, V.V.E. (1980) Proc Natl Acad Sci U S A 77: 3196
Organizational Affiliation:
Department of Chemistry and Biochemistry, University of Colorado, Boulder 80309, USA.
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