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1slo

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{{STRUCTURE_1slo| PDB=1slo | SCENE= }}
{{STRUCTURE_1slo| PDB=1slo | SCENE= }}
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'''FIRST STEM LOOP OF THE SL1 RNA FROM CAENORHABDITIS ELEGANS, NMR, MINIMIZED AVERAGE STRUCTURE'''
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===FIRST STEM LOOP OF THE SL1 RNA FROM CAENORHABDITIS ELEGANS, NMR, MINIMIZED AVERAGE STRUCTURE===
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==Overview==
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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.
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(as it appears on PubMed at http://www.pubmed.gov), where 8805553 is the PubMed ID number.
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{{ABSTRACT_PUBMED_8805553}}
==About this Structure==
==About this Structure==
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Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SLO OCA].
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Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SLO OCA].
==Reference==
==Reference==
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[[Category: Splice donor site]]
[[Category: Splice donor site]]
[[Category: Stem-loop]]
[[Category: Stem-loop]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 08:51:36 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 15:44:17 2008''

Revision as of 12:44, 28 July 2008

Image:1slo.png

Template:STRUCTURE 1slo

FIRST STEM LOOP OF THE SL1 RNA FROM CAENORHABDITIS ELEGANS, NMR, MINIMIZED AVERAGE STRUCTURE

Template:ABSTRACT PUBMED 8805553

About this Structure

Full experimental information is available from OCA.

Reference

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

Page seeded by OCA on Mon Jul 28 15:44:17 2008

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