View source for 1mfk


==Structure of Prokaryotic SECIS mRNA Hairpin==
<StructureSection load='1mfk' size='340' side='right'caption='[[1mfk]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1mfk]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MFK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1MFK FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1mfk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1mfk OCA], [https://pdbe.org/1mfk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1mfk RCSB], [https://www.ebi.ac.uk/pdbsum/1mfk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1mfk ProSAT]</span></td></tr>
</table>
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== Publication Abstract from PubMed ==
In prokaryotes, the recoding of a UGA stop codon as a selenocysteine codon requires a special elongation factor (EF) SelB and a stem-loop structure within the mRNA called a selenocysteine insertion sequence (SECIS). Here, we used NMR spectroscopy to determine the solution structure of the SECIS mRNA hairpin and characterized its interaction with the mRNA-binding domain of SelB. Our structural and biochemical data identified the conserved structural features important for binding to EF SelB within different SECIS RNA sequences. In the free SECIS mRNA structure, conserved nucleotides are strongly exposed for recognition by SelB. Binding of the C-terminal domain of SelB stabilizes the RNA secondary structure. In the protein-RNA complex, a Watson-Crick loop base-pair leaves a GpU sequence accessible for SelB recognition. This GpU sequence at the tip of the capping tetraloop and a bulge uracil five Watson-Crick base-pairs apart from the GpU are essential for interaction with SelB.

Structure of prokaryotic SECIS mRNA hairpin and its interaction with elongation factor SelB.,Fourmy D, Guittet E, Yoshizawa S J Mol Biol. 2002 Nov 15;324(1):137-50. PMID:12421564<ref>PMID:12421564</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 1mfk" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Fourmy D]]
[[Category: Guittet E]]
[[Category: Yoshizawa S]]