Biological Assembly 1  

 3D View: Structure

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 18133.10 
• Atom Count: 1274 
• Residue Count: 158 
• Unique protein chains: 1

2KN4

The structure of the RRM domain of SC35

• DOI: 10.2210/pdb2KN4/pdb

• Classification: RNA BINDING PROTEIN
• Organism(s): Streptococcus sp. group G, Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2009-08-14 Released: 2010-08-18 
• Deposition Author(s): Clayton, J.C., Goult, B.T., Lian, L.-Y.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

The structure and selectivity of the SR protein SRSF2 RRM domain with RNA

Phelan, M.M., Goult, B.T., Clayton, J.C., Hautbergue, G.M., Wilson, S.A., Lian, L.-Y.

(2011) Nucleic Acids Res. --: --

• PubMed: 22140111 
• DOI: 10.1093/nar/gkr1164


• PubMed Abstract: 
  

SRSF2 is a prototypical SR protein which plays important roles in the alternative splicing of pre-mRNA. It has been shown to be involved in regulatory pathways for maintaining genomic stability and play important roles in regulating key receptors in the heart. We report here the solution structure of the RNA recognition motifs (RRM) domain of free human SRSF2 (residues 9-101). Compared with other members of the SR protein family, SRSF2 structure has a longer L3 loop region. The conserved aromatic residue in the RNP2 motif is absent in SRSF2. Calorimetric titration shows that the RNA sequence 5'AGCAGAGUA3' binds SRSF2 with a K(d) of 61 ± 1 nM and a 1:1 stoichiometry. NMR and mutagenesis experiments reveal that for SFSF2, the canonical β1 and β3 interactions are themselves not sufficient for effective RNA binding; the additional loop L3 is crucial for RNA complex formation. A comparison is made between the structures of SRSF2-RNA complex with other known RNA complexes of SR proteins. We conclude that interactions involving the L3 loop, N- and C-termini of the RRM domain are collectively important for determining selectivity between the protein and RNA.

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Organizational Affiliation: 

NMR Centre for Structural Biology, University of Liverpool, Institute of Integrative Biology, Crown Street, Liverpool L69 7ZB, UK.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Immunoglobulin G-binding protein G, Splicing factor; arginine/serine-rich 2	A	158	Streptococcus sp. group G, Homo sapiens This entity is chimeric	Mutation(s): 0  Gene Names: spg, SRSF2 (SFRS2)
Find proteins for P19909 (Streptococcus sp. group G) Go to UniProtKB:  P19909
Find proteins for Q01130 (Homo sapiens) Go to Gene View: SRSF2 Go to UniProtKB:  Q01130

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2009-08-14 
• Released Date: 2010-08-18 
• Deposition Author(s): Clayton, J.C., Goult, B.T., Lian, L.-Y.

Revision History 

• Version 1.0: 2010-08-18
  Type: Initial release
• Version 1.1: 2011-07-13
  Type: Version format compliance
• Version 1.2: 2011-12-21
  Type: Database references