PMID- 26578560 OWN - NLM STAT- MEDLINE DCOM- 20160621 LR - 20181113 IS - 1362-4962 (Electronic) IS - 0305-1048 (Print) IS - 0305-1048 (Linking) VI - 43 IP - 22 DP - 2015 Dec 15 TI - Structural basis for RNA-genome recognition during bacteriophage Qbeta replication. PG - 10893-906 LID - 10.1093/nar/gkv1212 [doi] AB - Upon infection of Escherichia coli by bacteriophage Qbeta, the virus-encoded beta-subunit recruits host translation elongation factors EF-Tu and EF-Ts and ribosomal protein S1 to form the Qbeta replicase holoenzyme complex, which is responsible for amplifying the Qbeta (+)-RNA genome. Here, we use X-ray crystallography, NMR spectroscopy, as well as sequence conservation, surface electrostatic potential and mutational analyses to decipher the roles of the beta-subunit and the first two oligonucleotide-oligosaccharide-binding domains of S1 (OB1-2) in the recognition of Qbeta (+)-RNA by the Qbeta replicase complex. We show how three basic residues of the beta subunit form a patch located adjacent to the OB2 domain, and use NMR spectroscopy to demonstrate for the first time that OB2 is able to interact with RNA. Neutralization of the basic residues by mutagenesis results in a loss of both the phage infectivity in vivo and the ability of Qbeta replicase to amplify the genomic RNA in vitro. In contrast, replication of smaller replicable RNAs is not affected. Taken together, our data suggest that the beta-subunit and protein S1 cooperatively bind the (+)-stranded Qbeta genome during replication initiation and provide a foundation for understanding template discrimination during replication initiation. CI - (c) The Author(s) 2015. Published by Oxford University Press on behalf of Nucleic Acids Research. FAU - Gytz, Heidi AU - Gytz H AD - Department of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark. FAU - Mohr, Durita AU - Mohr D AD - Department of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark. FAU - Seweryn, Paulina AU - Seweryn P AD - Department of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark. FAU - Yoshimura, Yuichi AU - Yoshimura Y AD - Interdisciplinary Nanoscience Centre (iNANO) and Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark. FAU - Kutlubaeva, Zarina AU - Kutlubaeva Z AD - Institute of Protein Research of the Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia. FAU - Dolman, Fleur AU - Dolman F AD - Department of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark. FAU - Chelchessa, Bosene AU - Chelchessa B AD - Department of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark. FAU - Chetverin, Alexander B AU - Chetverin AB AD - Institute of Protein Research of the Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia. FAU - Mulder, Frans A A AU - Mulder FA AD - Interdisciplinary Nanoscience Centre (iNANO) and Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark. FAU - Brodersen, Ditlev E AU - Brodersen DE AD - Department of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark. FAU - Knudsen, Charlotte R AU - Knudsen CR AD - Department of Molecular Biology and Genetics, Aarhus University, DK-8000 Aarhus C, Denmark crk@mbg.au.dk. LA - eng SI - PDB/4R71 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151117 PL - England TA - Nucleic Acids Res JT - Nucleic acids research JID - 0411011 RN - 0 (Escherichia coli Proteins) RN - 0 (Protein Subunits) RN - 0 (RNA, Viral) RN - 0 (Ribosomal Proteins) RN - 0 (ribosomal protein S1, E coli) RN - EC 2.7.7.- (Q beta Replicase) SB - IM MH - Allolevivirus/genetics/*physiology MH - Dimerization MH - Escherichia coli Proteins/chemistry/metabolism MH - *Genome, Viral MH - Mutation MH - Protein Binding MH - Protein Structure, Tertiary MH - Protein Subunits/chemistry/genetics/metabolism MH - Q beta Replicase/*chemistry/genetics/metabolism MH - RNA, Viral/biosynthesis/metabolism MH - Ribosomal Proteins/chemistry/metabolism MH - *Virus Replication PMC - PMC4678825 EDAT- 2015/11/19 06:00 MHDA- 2016/06/22 06:00 PMCR- 2015/11/17 CRDT- 2015/11/19 06:00 PHST- 2015/10/28 00:00 [accepted] PHST- 2015/09/10 00:00 [received] PHST- 2015/11/19 06:00 [entrez] PHST- 2015/11/19 06:00 [pubmed] PHST- 2016/06/22 06:00 [medline] PHST- 2015/11/17 00:00 [pmc-release] AID - gkv1212 [pii] AID - 10.1093/nar/gkv1212 [doi] PST - ppublish SO - Nucleic Acids Res. 2015 Dec 15;43(22):10893-906. doi: 10.1093/nar/gkv1212. Epub 2015 Nov 17.