Multisubunit RNA Polymerases of Jumbo Bacteriophages Prokaryotic viruses with DNA genome longer than 200 kb are collectively known as “jumbo phages”. Some representatives of this phylogenetically numerous group encode two DNA-dependent RNA polymerases (RNAPs)-a virion RNAP and a non-virion RNAP. In distinction to most different phage-encoded RNAPs, the jumbo phage RNAPs are multisubunit enzymes associated to
