4c40: Difference between revisions
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==The molecular recognition of kink turn structure by the L7Ae class of proteins== | ==The molecular recognition of kink turn structure by the L7Ae class of proteins== | ||
<StructureSection load='4c40' size='340' side='right' caption='[[4c40]], [[Resolution|resolution]] 2.20Å' scene=''> | <StructureSection load='4c40' size='340' side='right' caption='[[4c40]], [[Resolution|resolution]] 2.20Å' scene=''> | ||
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<table><tr><td colspan='2'>[[4c40]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4C40 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4C40 FirstGlance]. <br> | <table><tr><td colspan='2'>[[4c40]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4C40 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4C40 FirstGlance]. <br> | ||
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4bw0|4bw0]], [[4c4w|4c4w]]</td></tr> | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4bw0|4bw0]], [[4c4w|4c4w]]</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=4c40 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4c40 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4c40 RCSB], [http://www.ebi.ac.uk/pdbsum/4c40 PDBsum]</span></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=4c40 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4c40 OCA], [http://pdbe.org/4c40 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4c40 RCSB], [http://www.ebi.ac.uk/pdbsum/4c40 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4c40 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | </div> | ||
<div class="pdbe-citations 4c40" style="background-color:#fffaf0;"></div> | |||
== References == | == References == | ||
<references/> | <references/> | ||
Revision as of 10:20, 5 August 2016
The molecular recognition of kink turn structure by the L7Ae class of proteinsThe molecular recognition of kink turn structure by the L7Ae class of proteins
Structural highlights
Publication Abstract from PubMedL7Ae is a member of a protein family that binds kink-turns (k-turns) in many functional RNA species. We have solved the X-ray crystal structure of the near-consensus sequence Kt-7 of Haloarcula marismortui bound by Archaeoglobus fulgidus L7Ae at 2.3-A resolution. We also present a structure of Kt-7 in the absence of bound protein at 2.2-A resolution. As a result, we can describe a general mode of recognition of k-turn structure by the L7Ae family proteins. The protein makes interactions in the widened major groove on the outer face of the k-turn. Two regions of the protein are involved. One is an alpha-helix that enters the major groove of the NC helix, making both nonspecific backbone interactions and specific interactions with the guanine nucleobases of the conserved G*A pairs. A hydrophobic loop makes close contact with the L1 and L2 bases, and a glutamate side chain hydrogen bonds with L1. Taken together, these interactions are highly selective for the structure of the k-turn and suggest how conformational selection of the folded k-turn occurs. The molecular recognition of kink-turn structure by the L7Ae class of proteins.,Huang L, Lilley DM RNA. 2013 Oct 22. PMID:24149842[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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