On the Evolution of the Single-Subunit RNA Polymerases

@article{Cermakian1997OnTE,
  title={On the Evolution of the Single-Subunit RNA Polymerases},
  author={Nicolas Cermakian and Tatsuya M. Ikeda and Pedro Miramontes and Bernd Franz Lang and Michael W. Gray and Robert Cedergren},
  journal={Journal of Molecular Evolution},
  year={1997},
  volume={45},
  pages={671-681}
}
Abstract. Many eukaryotic nuclear genomes as well as mitochondrial plasmids contain genes displaying evident sequence similarity to those encoding the single-subunit RNA polymerase (ssRNAP) of bacteriophage T7 and its relatives. We have collected and aligned these ssRNAP sequences and have constructed unrooted phylogenetic trees that demonstrate the separation of ssRNAPs into three well-defined and nonoverlapping clusters (phage-encoded, nucleus-encoded, and plasmid-encoded). Our analyses… 
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