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2hgl
From Proteopedia
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[[Image:2hgl.gif|left|200px]] | [[Image:2hgl.gif|left|200px]] | ||
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'''NMR structure of the first qRRM domain of human hnRNP F''' | '''NMR structure of the first qRRM domain of human hnRNP F''' | ||
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[[Category: Allain, F H.T]] | [[Category: Allain, F H.T]] | ||
[[Category: Dominguez, C.]] | [[Category: Dominguez, C.]] | ||
| - | [[Category: | + | [[Category: Alternative]] |
| - | [[Category: | + | [[Category: G-quadruplex]] |
| - | [[Category: | + | [[Category: G-tract]] |
| - | [[Category: | + | [[Category: Rna recognition motif]] |
| - | [[Category: | + | [[Category: Splicing]] |
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| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | |
Revision as of 03:16, 4 May 2008
NMR structure of the first qRRM domain of human hnRNP F
Overview
The heterogeneous nuclear ribonucleoprotein (hnRNP) F belongs to the hnRNP H family involved in the regulation of alternative splicing and polyadenylation and specifically recognizes poly(G) sequences (G-tracts). In particular, hnRNP F binds a G-tract of the Bcl-x RNA and regulates its alternative splicing, leading to two isoforms, Bcl-x(S) and Bcl-x(L), with antagonist functions. In order to gain insight into G-tract recognition by hnRNP H members, we initiated an NMR study of human hnRNP F. We present the solution structure of the three quasi RNA recognition motifs (qRRMs) of hnRNP F and identify the residues that are important for the interaction with the Bcl-x RNA by NMR chemical shift perturbation and mutagenesis experiments. The three qRRMs exhibit the canonical betaalphabetabetaalphabeta RRM fold but additional secondary structure elements are present in the two N-terminal qRRMs of hnRNP F. We show that qRRM1 and qRRM2 but not qRRM3 are responsible for G-tract recognition and that the residues of qRRM1 and qRRM2 involved in G-tract interaction are not on the beta-sheet surface as observed for the classical RRM but are part of a short beta-hairpin and two adjacent loops. These regions define a novel interaction surface for RNA recognition by RRMs.
About this Structure
2HGL is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
NMR structure of the three quasi RNA recognition motifs (qRRMs) of human hnRNP F and interaction studies with Bcl-x G-tract RNA: a novel mode of RNA recognition., Dominguez C, Allain FH, Nucleic Acids Res. 2006 Aug 2;34(13):3634-45. Print 2006. PMID:16885237 Page seeded by OCA on Sun May 4 06:16:10 2008
