Structural basis of template strand deoxyuridine promoter recognition by a viral RNA polymerase
Journal Article
·
· Nature Communications
- University of Texas Medical Branch, Galveston, TX (United States)
- University of Texas Medical Branch, Galveston, TX (United States); Skolkovo Institute of Science and Technology (Russian Federation)
- Skolkovo Institute of Science and Technology (Russian Federation)
- Rowan University School of Osteopathic Medicine, Stratford, NJ (United States)
- DeepMind Technologies Limited, London (United Kingdom)
- Skolkovo Institute of Science and Technology (Russian Federation); Russian Academy of Sciences (RAS), Moscow (Russian Federation); State University of New Jersey, Piscataway, NJ (United States)
Recognition of promoters in bacterial RNA polymerases (RNAPs) is controlled by sigma subunits. The key sequence motif recognized by the sigma, the -10 promoter element, is located in the non-template strand of the double-stranded DNA molecule ~10 nucleotides upstream of the transcription start site. Here, we explain the mechanism by which the phage AR9 non-virion RNAP (nvRNAP), a bacterial RNAP homolog, recognizes the -10 element of its deoxyuridine-containing promoter in the template strand. The AR9 sigma-like subunit, the nvRNAP enzyme core, and the template strand together form two nucleotide base-accepting pockets whose shapes dictate the requirement for the conserved deoxyuridines. A single amino acid substitution in the AR9 sigma-like subunit allows one of these pockets to accept a thymine thus expanding the promoter consensus. Our work demonstrates the extent to which viruses can evolve host-derived multisubunit enzymes to make transcription of their own genes independent of the host.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- Michigan Economic Development Corporation; Michigan Technology Tri-Corridor; Ministry of Science and Higher Education of Russian Federation; Russian Foundation for Basic Research; Russian Science Foundation; USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-05CH11231; AC02-06CH11357
- OSTI ID:
- 1875162
- Alternate ID(s):
- OSTI ID: 1876079
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 13; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- ENGLISH
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