4qln: Difference between revisions
From Proteopedia
Jump to navigationJump to search
m Protected "4qln" [edit=sysop:move=sysop] |
No edit summary |
||
| Line 1: | Line 1: | ||
''' | ==structure of ydao riboswitch binding with c-di-dAMP== | ||
<StructureSection load='4qln' size='340' side='right' caption='[[4qln]], [[Resolution|resolution]] 2.65Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4qln]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4QLN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4QLN FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=2BA:(2R,3R,3AS,5R,7AR,9R,10R,10AS,12R,14AR)-2,9-BIS(6-AMINO-9H-PURIN-9-YL)OCTAHYDRO-2H,7H-DIFURO[3,2-D 3,2-J][1,3,7,9,2,8]TETRAOXADIPHOSPHACYCLODODECINE-3,5,10,12-TETROL+5,12-DIOXIDE'>2BA</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene><br> | |||
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4qlm|4qlm]]</td></tr> | |||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4qln FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4qln OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4qln RCSB], [http://www.ebi.ac.uk/pdbsum/4qln PDBsum]</span></td></tr> | |||
<table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The ydaO riboswitch, involved in sporulation, osmotic stress responses and cell wall metabolism, targets the second messenger cyclic-di-AMP with subnanomolar affinity. We have solved the structure of c-di-AMP bound to the Thermoanaerobacter tengcongensis ydaO riboswitch, thereby identifying a five-helical scaffold containing a zippered-up bubble, a pseudoknot and long-range tertiary base pairs. Highlights include the identification of two c-di-AMP binding pockets on the same face of the riboswitch, related by pseudo-two-fold symmetry, with potential for cross-talk between sites mediated by adjacently positioned base-stacking alignments connecting pockets. The adenine rings of bound c-di-AMP molecules are wedged between bases and stabilized by stacking, base-sugar and sugar-sugar intermolecular hydrogen bonding interactions. The structural studies are complemented by isothermal titration calorimetry-based binding studies of mutants mediating key tertiary intermolecular contacts. The T. tengcongensis ydaO riboswitch, like its Bacillus subtilis counterpart, most likely functions through a transcription termination mechanism, with the c-di-AMP bound state representing an 'off' switch. | |||
c-di-AMP binds the ydaO riboswitch in two pseudo-symmetry-related pockets.,Ren A, Patel DJ Nat Chem Biol. 2014 Aug 3. doi: 10.1038/nchembio.1606. PMID:25086509<ref>PMID:25086509</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Patel, D J.]] | |||
[[Category: Ren, A M.]] | |||
[[Category: C-di-amp]] | |||
[[Category: Rna]] | |||
[[Category: Ydao riboswitch]] | |||
Revision as of 08:58, 13 August 2014
structure of ydao riboswitch binding with c-di-dAMP
| ||||||||||||
