2i2y | pdb_00002i2y

Solution structure of the RRM of SRp20 bound to the RNA CAUC

spinqualitylabelsall models 2i2y, 28 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2i2y is a 2 chain structure with sequence from Streptococcus sp. 'group g'. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Gene: spg and SFRS3 (Streptococcus sp. 'group G') Resources: FirstGlance, OCA, RCSB, PDBsum Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed The sequence-specific RNA-binding proteins SRp20 and 9G8 are the smallest members of the serine- and arginine-rich (SR) protein family, well known for their role in splicing. They also play a role in mRNA export, in particular of histone mRNAs. We present the solution structures of the free 9G8 and SRp20 RNA recognition motifs (RRMs) and of SRp20 RRM in complex with the RNA sequence 5'CAUC3'. The SRp20-RNA structure reveals that although all 4 nt are contacted by the RRM, only the 5' cytosine is primarily recognized in a specific way. This might explain the numerous consensus sequences found by SELEX (systematic evolution of ligands by exponential enrichment) for the RRM of 9G8 and SRp20. Furthermore, we identify a short arginine-rich peptide adjacent to the SRp20 and 9G8 RRMs, which does not contact RNA but is necessary and sufficient for interaction with the export factor Tip-associated protein (TAP). Together, these results provide a molecular description for mRNA and TAP recognition by SRp20 and 9G8. Molecular basis of RNA recognition and TAP binding by the SR proteins SRp20 and 9G8.,Hargous Y, Hautbergue GM, Tintaru AM, Skrisovska L, Golovanov AP, Stevenin J, Lian LY, Wilson SA, Allain FH EMBO J. 2006 Nov 1;25(21):5126-37. Epub 2006 Oct 12. PMID:17036044 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Pre-mRNA-splicing factor

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