6HMI

Solution structure of the RNA duplex formed by the 5'-end of U1snRNA and the 5'-splice site of SMN2 exon7


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis of a small molecule targeting RNA for a specific splicing correction.

Campagne, S.Boigner, S.Rudisser, S.Moursy, A.Gillioz, L.Knorlein, A.Hall, J.Ratni, H.Clery, A.Allain, F.H.

(2019) Nat Chem Biol 15: 1191-1198

  • DOI: 10.1038/s41589-019-0384-5
  • Primary Citation of Related Structures:  
    6HMI, 6HMO

  • PubMed Abstract: 
  • Splicing modifiers promoting SMN2 exon 7 inclusion have the potential to treat spinal muscular atrophy, the leading genetic cause of infantile death. These small molecules are SMN2 exon 7 selective and act during the early stages of spliceosome assembly. Here, we show at atomic resolution how the drug selectively promotes the recognition of the weak 5' splice site of SMN2 exon 7 by U1 snRNP ...

    Splicing modifiers promoting SMN2 exon 7 inclusion have the potential to treat spinal muscular atrophy, the leading genetic cause of infantile death. These small molecules are SMN2 exon 7 selective and act during the early stages of spliceosome assembly. Here, we show at atomic resolution how the drug selectively promotes the recognition of the weak 5' splice site of SMN2 exon 7 by U1 snRNP. The solution structure of the RNA duplex formed following 5' splice site recognition in the presence of the splicing modifier revealed that the drug specifically stabilizes a bulged adenine at this exon-intron junction and converts the weak 5' splice site of SMN2 exon 7 into a stronger one. The small molecule acts as a specific splicing enhancer cooperatively with the splicing regulatory network. Our investigations uncovered a novel concept for gene-specific alternative splicing correction that we coined 5' splice site bulge repair.


    Organizational Affiliation

    Department of Biology, Institute of Molecular Biology and Biophysics, ETH Zurich, Zurich, Switzerland. allain@mol.biol.ethz.ch.



Macromolecules
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    RNA (5'-R(*AP*UP*AP*CP*(PSU)P*(PSU)P*AP*CP*CP*UP*G)-3')A11Homo sapiens
    Protein Feature View
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    • Reference Sequence
    • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 2
      MoleculeChainsLengthOrganismImage
      RNA (5'-R(*GP*GP*AP*GP*UP*AP*AP*GP*UP*CP*U)-3')B11Homo sapiens
      Protein Feature View
      Expand
      • Reference Sequence
      Experimental Data & Validation

      Experimental Data

      • Method: SOLUTION NMR
      • Conformers Calculated: 50 
      • Conformers Submitted: 20 
      • Selection Criteria: structures with the least restraint violations 
      • OLDERADO: 6HMI Olderado

      Structure Validation

      View Full Validation Report




      Entry History 

      Deposition Data

      Revision History  (Full details and data files)

      • Version 1.0: 2019-08-14
        Type: Initial release
      • Version 1.1: 2020-02-26
        Changes: Database references