2KN4
The structure of the RRM domain of SC35
Summary for 2KN4
| Entry DOI | 10.2210/pdb2kn4/pdb |
| Descriptor | Immunoglobulin G-binding protein G,Serine/arginine-rich splicing factor 2 (1 entity in total) |
| Functional Keywords | rrm domain, cell wall, igg-binding protein, peptidoglycan-anchor, secreted, mrna processing, mrna splicing, nucleus, phosphoprotein, rna-binding, rna binding protein |
| Biological source | Streptococcus sp. group G More |
| Total number of polymer chains | 1 |
| Total formula weight | 18133.10 |
| Authors | Clayton, J.C.,Goult, B.T.,Lian, L.-Y. (deposition date: 2009-08-14, release date: 2010-08-18, Last modification date: 2024-05-01) |
| Primary citation | Phelan, M.M.,Goult, B.T.,Clayton, J.C.,Hautbergue, G.M.,Wilson, S.A.,Lian, L.-Y. The structure and selectivity of the SR protein SRSF2 RRM domain with RNA Nucleic Acids Res., 2011 Cited by 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. PubMed: 22140111DOI: 10.1093/nar/gkr1164 PDB entries with the same primary citation |
| Experimental method | SOLUTION NMR |
Structure validation
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