Noncatalytic Ions Direct the RNA-Dependent RNA Polymerase of Bacterial Double-Stranded RNA Virus Phi6 from De Novo Initiation to Elongation.
Wright, S., Poranen, M.M., Bamford, D.H., Stuart, D.I., Grimes, J.M.(2012) J Virol 86: 2837
- PubMed: 22205747 
- DOI: 10.1128/JVI.05168-11
- Primary Citation of Related Structures:  
4A8F, 4A8K, 4A8M, 4A8O, 4A8Q, 4A8S, 4A8W, 4A8Y - PubMed Abstract: 
RNA-dependent RNA polymerases (RdRps) are key to the replication of RNA viruses. A common divalent cation binding site, distinct from the positions of catalytic ions, has been identified in many viral RdRps. We have applied biochemical, biophysical, and structural approaches to show how the RdRp from bacteriophage ϕ6 uses the bound noncatalytic Mn(2+) to facilitate the displacement of the C-terminal domain during the transition from initiation to elongation ...