Solution structure of human SRSF2 (SC35) RRM in complex with 5'-UGGAGU-3'

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

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This is version 1.2 of the entry. See complete history


A syn-anti conformational difference allows SRSF2 to recognize guanines and cytosines equally well.

Daubner, G.M.Clery, A.Jayne, S.Stevenin, J.Allain, F.H.

(2012) EMBO J 31: 162-174

  • DOI: https://doi.org/10.1038/emboj.2011.367
  • Primary Citation of Related Structures:  
    2LEA, 2LEB, 2LEC

  • PubMed Abstract: 

    SRSF2 (SC35) is a key player in the regulation of alternative splicing events and binds degenerated RNA sequences with similar affinity in nanomolar range. We have determined the solution structure of the SRSF2 RRM bound to the 5'-UCCAGU-3' and 5'-UGGAGU-3' RNA, both identified as SRSF2 binding sites in the HIV-1 tat exon 2. RNA recognition is achieved through a novel sandwich-like structure with both termini forming a positively charged cavity to accommodate the four central nucleotides. To bind both RNA sequences equally well, SRSF2 forms a nearly identical network of intermolecular interactions by simply flipping the bases of the two consecutive C or G nucleotides into either anti or syn conformation. We validate this unusual mode of RNA recognition functionally by in-vitro and in-vivo splicing assays and propose a 5'-SSNG-3' (S=C/G) high-affinity binding consensus sequence for SRSF2. In conclusion, in addition to describe for the first time the RNA recognition mode of SRSF2, we provide the precise consensus sequence to identify new putative binding sites for this splicing factor.

  • Organizational Affiliation

    Institute of Molecular Biology and Biophysics, ETH Zürich, Zürich, Switzerland.


Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Serine/arginine-rich splicing factor 2135Homo sapiensMutation(s): 0 
Gene Names: SRSF2SFRS2
UniProt & NIH Common Fund Data Resources
Find proteins for Q01130 (Homo sapiens)
Explore Q01130 
Go to UniProtKB:  Q01130
GTEx:  ENSG00000161547 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ01130
Sequence Annotations
  • Reference Sequence

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains LengthOrganismImage
RNA (5'-R(*UP*GP*GP*AP*GP*U)-3')6synthetic construct
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-11-23
    Type: Initial release
  • Version 1.1: 2012-05-23
    Changes: Database references
  • Version 1.2: 2024-05-08
    Changes: Data collection, Database references, Source and taxonomy, Structure summary