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==FIRST STEM LOOP OF THE SL1 RNA FROM CAENORHABDITIS ELEGANS, NMR, MINIMIZED AVERAGE STRUCTURE==
<StructureSection load='1slo' size='340' side='right'caption='[[1slo]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1slo]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Caenorhabditis_elegans Caenorhabditis elegans]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SLO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1SLO 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=1slo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1slo OCA], [https://pdbe.org/1slo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1slo RCSB], [https://www.ebi.ac.uk/pdbsum/1slo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1slo ProSAT]</span></td></tr>
</table>
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== Publication Abstract from PubMed ==
BACKGROUND: RNA splicing is both ubiquitous and essential for the maturation of precursor mRNA molecules in eukaryotes. The process of trans-splicing involves the transfer of a short spliced leader (SL) RNA sequence to a consensus acceptor site on a separate pre-mRNA transcript. In Caenorhabditis elegans, a majority of pre-mRNA transcripts receive the 22-nucleotide SL from the SL1 RNA. Very little is known about the various roles that RNA structures play in the complex conformational rearrangements and reactions involved in premRNA splicing. RESULTS: We have determined the solution structure of a domain of the first stem loop of the SL1 RNA of C. elegans, using homonuclear and heteronuclear NMR techniques; this domain contains the splice-donor site and a nine-nucleotide hairpin loop. In solution, the SL1 RNA fragment adopts a stem-loop structure: nucleotides in the stem region form a classical A-type helix while nucleotides in the hairpin loop specify a novel conformation that includes a helix, that extends for the first three residues; a syn guanosine nucleotide at the turn region; and an extrahelical adenine that defines a pocket with nucleotides at the base of the loop. CONCLUSION: The proximity of this pocket to the splice donor site, combined with the observation that the nucleotides in this motif are conserved among all nematode SL RNAs, suggests that this pocket may provide a recognition site for a protein or RNA molecule in the trans-splicing process.

Solution structure of the donor site of a trans-splicing RNA.,Greenbaum NL, Radhakrishnan I, Patel DJ, Hirsh D Structure. 1996 Jun 15;4(6):725-33. PMID:8805553<ref>PMID:8805553</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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== References ==
<references/>
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</StructureSection>
[[Category: Caenorhabditis elegans]]
[[Category: Large Structures]]
[[Category: Greenbaum NL]]
[[Category: Hirsh D]]
[[Category: Patel DJ]]
[[Category: Radhakrishnan I]]