2M8D

Structure of SRSF1 RRM2 in complex with the RNA 5'-UGAAGGAC-3'


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 16 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Isolated pseudo-RNA-recognition motifs of SR proteins can regulate splicing using a noncanonical mode of RNA recognition.

Clery, A.Sinha, R.Anczukow, O.Corrionero, A.Moursy, A.Daubner, G.M.Valcarcel, J.Krainer, A.R.Allain, F.H.

(2013) Proc Natl Acad Sci U S A 110: E2802-E2811

  • DOI: https://doi.org/10.1073/pnas.1303445110
  • Primary Citation of Related Structures:  
    2M8D

  • PubMed Abstract: 

    Serine/arginine (SR) proteins, one of the major families of alternative-splicing regulators in Eukarya, have two types of RNA-recognition motifs (RRMs): a canonical RRM and a pseudo-RRM. Although pseudo-RRMs are crucial for activity of SR proteins, their mode of action was unknown. By solving the structure of the human SRSF1 pseudo-RRM bound to RNA, we discovered a very unusual and sequence-specific RNA-binding mode that is centered on one α-helix and does not involve the β-sheet surface, which typically mediates RNA binding by RRMs. Remarkably, this mode of binding is conserved in all pseudo-RRMs tested. Furthermore, the isolated pseudo-RRM is sufficient to regulate splicing of about half of the SRSF1 target genes tested, and the bound α-helix is a pivotal element for this function. Our results strongly suggest that SR proteins with a pseudo-RRM frequently regulate splicing by competing with, rather than recruiting, spliceosome components, using solely this unusual RRM.


  • Organizational Affiliation

    Institute for Molecular Biology and Biophysics, Swiss Federal Institute of Technology, 8093 Zurich, Switzerland.


Macromolecules

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Serine/arginine-rich splicing factor 191Homo sapiensMutation(s): 0 
Gene Names: SRSF1ASFSF2SF2P33SFRS1OK/SW-cl.3
UniProt & NIH Common Fund Data Resources
Find proteins for Q07955 (Homo sapiens)
Explore Q07955 
Go to UniProtKB:  Q07955
PHAROS:  Q07955
GTEx:  ENSG00000136450 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ07955
Sequence Annotations
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  • Reference Sequence

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Entity ID: 1
MoleculeChains LengthOrganismImage
RNA (5'-R(*UP*GP*AP*AP*GP*GP*AP*C)-3')8N/A
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 16 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-07-10
    Type: Initial release
  • Version 1.1: 2014-03-12
    Changes: Database references
  • Version 1.2: 2023-06-14
    Changes: Data collection, Database references, Other
  • Version 1.3: 2024-05-15
    Changes: Data collection, Database references