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  • 1
    Publication Date: 2015-03-25
    Description: The structure of messenger RNA is important for post-transcriptional regulation, mainly because it affects binding of trans-acting factors. However, little is known about the in vivo structure of full-length mRNAs. Here we present hiCLIP, a biochemical technique for transcriptome-wide identification of RNA secondary structures interacting with RNA-binding proteins (RBPs). Using this technique to investigate RNA structures bound by Staufen 1 (STAU1) in human cells, we uncover a dominance of intra-molecular RNA duplexes, a depletion of duplexes from coding regions of highly translated mRNAs, an unexpected prevalence of long-range duplexes in 3' untranslated regions (UTRs), and a decreased incidence of single nucleotide polymorphisms in duplex-forming regions. We also discover a duplex spanning 858 nucleotides in the 3' UTR of the X-box binding protein 1 (XBP1) mRNA that regulates its cytoplasmic splicing and stability. Our study reveals the fundamental role of mRNA secondary structures in gene expression and introduces hiCLIP as a widely applicable method for discovering new, especially long-range, RNA duplexes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4376666/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4376666/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sugimoto, Yoichiro -- Vigilante, Alessandra -- Darbo, Elodie -- Zirra, Alexandra -- Militti, Cristina -- D'Ambrogio, Andrea -- Luscombe, Nicholas M -- Ule, Jernej -- 103760/Wellcome Trust/United Kingdom -- 103760/Z/14/Z/Wellcome Trust/United Kingdom -- 206726/European Research Council/International -- 617837/European Research Council/International -- A16358/Cancer Research UK/United Kingdom -- MC_U105185858/Medical Research Council/United Kingdom -- U105185858/Medical Research Council/United Kingdom -- England -- Nature. 2015 Mar 26;519(7544):491-4. doi: 10.1038/nature14280. Epub 2015 Mar 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge Biomedical Campus, Cambridge CB2 0QH, UK. ; 1] Cancer Research UK London Research Institute, 44 Lincoln's Inn Fields, London WC2A 3LY, UK [2] UCL Genetics Institute, Department of Genetics, Evolution and Environment, University College London, Gower Street, London WC1E 6BT, UK. ; Cancer Research UK London Research Institute, 44 Lincoln's Inn Fields, London WC2A 3LY, UK. ; Department of Molecular Neuroscience, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK. ; 1] MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge Biomedical Campus, Cambridge CB2 0QH, UK [2] Department of Molecular Neuroscience, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK. ; 1] Cancer Research UK London Research Institute, 44 Lincoln's Inn Fields, London WC2A 3LY, UK [2] UCL Genetics Institute, Department of Genetics, Evolution and Environment, University College London, Gower Street, London WC1E 6BT, UK [3] Okinawa Institute of Science &Technology, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25799984" target="_blank"〉PubMed〈/a〉
    Keywords: 3' Untranslated Regions/genetics ; Base Sequence ; Cytoplasm/genetics/metabolism ; Cytoskeletal Proteins/*metabolism ; DNA-Binding Proteins/genetics ; Humans ; *Nucleic Acid Conformation ; Polymorphism, Single Nucleotide/genetics ; RNA Splicing ; RNA Stability ; RNA, Messenger/*chemistry/genetics/*metabolism ; RNA-Binding Proteins/*metabolism ; Transcription Factors/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2014-09-12
    Description: Genetic equality between males and females is established by chromosome-wide dosage-compensation mechanisms. In the fruitfly Drosophila melanogaster, the dosage-compensation complex promotes twofold hypertranscription of the single male X-chromosome and is silenced in females by inhibition of the translation of msl2, which codes for the limiting component of the dosage-compensation complex. The female-specific protein Sex-lethal (Sxl) recruits Upstream-of-N-ras (Unr) to the 3' untranslated region of msl2 messenger RNA, preventing the engagement of the small ribosomal subunit. Here we report the 2.8 A crystal structure, NMR and small-angle X-ray and neutron scattering data of the ternary Sxl-Unr-msl2 ribonucleoprotein complex featuring unprecedented intertwined interactions of two Sxl RNA recognition motifs, a Unr cold-shock domain and RNA. Cooperative complex formation is associated with a 1,000-fold increase of RNA binding affinity for the Unr cold-shock domain and involves novel ternary interactions, as well as non-canonical RNA contacts by the alpha1 helix of Sxl RNA recognition motif 1. Our results suggest that repression of dosage compensation, necessary for female viability, is triggered by specific, cooperative molecular interactions that lock a ribonucleoprotein switch to regulate translation. The structure serves as a paradigm for how a combination of general and widespread RNA binding domains expands the code for specific single-stranded RNA recognition in the regulation of gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hennig, Janosch -- Militti, Cristina -- Popowicz, Grzegorz M -- Wang, Iren -- Sonntag, Miriam -- Geerlof, Arie -- Gabel, Frank -- Gebauer, Fatima -- Sattler, Michael -- England -- Nature. 2014 Nov 13;515(7526):287-90. doi: 10.1038/nature13693. Epub 2014 Sep 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Institute of Structural Biology, Helmholtz Zentrum Munchen, Ingolstadter Landstrasse 1, DE-85764, Germany [2] Center for Integrated Protein Science Munich at Biomolecular NMR Spectroscopy, Department Chemie, Technische Universitat Munchen, Lichtenbergstr. 4, DE-85747 Garching, Germany. ; 1] Centre for Genomic Regulation, Gene Regulation, Stem Cells and Cancer Programme, Dr Aiguader 88, 08003 Barcelona, Spain [2] Universisty Pompeu Fabra, Dr Aiguader 88, 08003 Barcelona, Spain. ; Institute of Structural Biology, Helmholtz Zentrum Munchen, Ingolstadter Landstrasse 1, DE-85764, Germany. ; 1] Universite Grenoble Alpes, Institut de Biologie Structurale, F-38044 Grenoble, France [2] Centre National de la Recherche Scientifique, Institut de Biologie Structurale, F-38044 Grenoble, France [3] Commissariat a l'Energie Atomique et aux Energies Alternatives, Institut de Biologie Structurale, F-38044 Grenoble, France [4] Institut Laue-Langevin, F-38042 Grenoble, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25209665" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Cell Line ; Cold-Shock Response ; Crystallography, X-Ray ; DNA-Binding Proteins/*chemistry/*metabolism ; Dosage Compensation, Genetic ; Drosophila Proteins/*chemistry/*metabolism ; Drosophila melanogaster/*chemistry/genetics ; Female ; Gene Expression Regulation ; Male ; Models, Molecular ; Neutron Diffraction ; Nuclear Magnetic Resonance, Biomolecular ; Nucleotide Motifs ; *Protein Biosynthesis ; Protein Structure, Tertiary ; RNA, Messenger/chemistry/*metabolism ; RNA-Binding Proteins/*chemistry/*metabolism ; Ribonucleoproteins/chemistry/metabolism ; Scattering, Small Angle ; Structure-Activity Relationship ; X-Ray Diffraction
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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