Post-catalytic spliceosome structure reveals mechanism of 3
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By me wilkinson · 2017 · cited by 83 — competent for 3'-splice site docking and exon ligation. ... 1 s-1 and a total dose of 50 e- е-2 per movie. image processing.
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Post-catalytic spliceosome structure reveals mechanism of 3'-splice site selection Max E. Wilkinson1*, Sebastian M. Fica1, Wojciech P. Galej1†, Christine M. Norman1, Andrew J. Newman1, and Kiyoshi Nagai1* 1MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom. †Present address: EMBL Grenoble, 71 Avenue des Martyrs, 38042 Grenoble Cedex 09, France * Correspondence and requests for materials should be addressed to Max E. Wilkinson ([email protected]) and Kiyoshi Nagai ([email protected]). Abstract Introns are removed from eukaryotic mRNA precursors by the spliceosome in two transesterification reactions – branching and exon ligation. Following branching, the 5'-exon remains paired to U5 snRNA loop 1, but the mechanism of 3'-splice site recognition during exon ligation has remained unclear. Here we present the 3.7Å cryo-EM structure of the yeast P complex spliceosome immediately after exon ligation. The 3'-splice site AG dinucleotide is re...
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