2LEC

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 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

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: 10.1038/emboj.2011.367
  • Primary Citation of Related Structures:  

  • 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'-UG ...

    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.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/arginine-rich splicing factor 2
A
135Homo sapiensMutation(s): 0 
Gene Names: SRSF2 (SFRS2)
Find proteins for Q01130 (Homo sapiens)
Go to Gene View: SRSF2
Go to UniProtKB:  Q01130
Entity ID: 2
MoleculeChainsLengthOrganism
RNA (5'-R(*UP*GP*GP*AP*GP*U)-3')B6N/A
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 2LEC Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-11-23
    Type: Initial release
  • Version 1.1: 2012-05-23
    Type: Database references