Download MendeleyStructure of the L Protein of Vesicular Stomatitis Virus from Electron Cryomicroscopy.
Liang, B., Li, Z., Jenni, S., Rahmeh, A.A., Morin, B.M., Grant, T., Grigorieff, N., Harrison, S.C., Whelan, S.P.(2015) Cell 162: 314
- PubMed: 26144317
- DOI: https://doi.org/10.1016/j.cell.2015.06.018
- Primary Citation of Related Structures:
5A22 - PubMed Abstract:
The large (L) proteins of non-segmented, negative-strand RNA viruses, a group that includes Ebola and rabies viruses, catalyze RNA-dependent RNA polymerization with viral ribonucleoprotein as template, a non-canonical sequence of capping and methylation reactions, and polyadenylation of viral messages. We have determined by electron cryomicroscopy the structure of the vesicular stomatitis virus (VSV) L protein. The density map, at a resolution of 3.8 Å, has led to an atomic model for nearly all of the 2109-residue polypeptide chain, which comprises three enzymatic domains (RNA-dependent RNA polymerase [RdRp], polyribonucleotidyl transferase [PRNTase], and methyltransferase) and two structural domains. The RdRp resembles the corresponding enzymatic regions of dsRNA virus polymerases and influenza virus polymerase. A loop from the PRNTase (capping) domain projects into the catalytic site of the RdRp, where it appears to have the role of a priming loop and to couple product elongation to large-scale conformational changes in L.
Organizational Affiliation:
Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 20115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 20115, USA.
