3fu2: Difference between revisions
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==Cocrystal structure of a class-I preQ1 riboswitch== | |||
=== | <StructureSection load='3fu2' size='340' side='right' caption='[[3fu2]], [[Resolution|resolution]] 2.85Å' scene=''> | ||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3fu2]] is a 3 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3FU2 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3FU2 FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=PRF:7-DEAZA-7-AMINOMETHYL-GUANINE'>PRF</scene></td></tr> | |||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3fu4|3fu4]]</td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3fu2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3fu2 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3fu2 RCSB], [http://www.ebi.ac.uk/pdbsum/3fu2 PDBsum]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Riboswitches are mRNA domains that bind metabolites and modulate gene expression in cis. We report cocrystal structures of a remarkably compact riboswitch (34 nucleotides suffice for ligand recognition) from Bacillus subtilis that is selective for the essential nucleobase preQ(1) (7-aminomethyl-7-deazaguanine). The structures reveal a previously unrecognized pseudoknot fold and suggest a conserved gene-regulatory mechanism whereby ligand binding promotes sequestration of an RNA segment that otherwise assembles into a transcriptional antiterminator. | |||
Cocrystal structure of a class I preQ1 riboswitch reveals a pseudoknot recognizing an essential hypermodified nucleobase.,Klein DJ, Edwards TE, Ferre-D'Amare AR Nat Struct Mol Biol. 2009 Mar;16(3):343-4. Epub 2009 Feb 22. PMID:19234468<ref>PMID:19234468</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
==See Also== | ==See Also== | ||
*[[Riboswitch|Riboswitch]] | *[[Riboswitch|Riboswitch]] | ||
== References == | |||
== | <references/> | ||
< | __TOC__ | ||
[[Category: Amare, A R.Ferre-D | </StructureSection> | ||
[[Category: Edwards, T E | [[Category: Amare, A R.Ferre-D]] | ||
[[Category: Klein, D J | [[Category: Edwards, T E]] | ||
[[Category: Klein, D J]] | |||
[[Category: Aptamer]] | [[Category: Aptamer]] | ||
[[Category: Preq1]] | [[Category: Preq1]] | ||
Revision as of 13:47, 17 December 2014
Cocrystal structure of a class-I preQ1 riboswitch
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