4w90: Difference between revisions
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<StructureSection load='4w90' size='340' side='right' caption='[[4w90]], [[Resolution|resolution]] 3.12Å' scene=''> | <StructureSection load='4w90' size='340' side='right' caption='[[4w90]], [[Resolution|resolution]] 3.12Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4w90]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4W90 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4W90 FirstGlance]. <br> | <table><tr><td colspan='2'>[[4w90]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/ ] and [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4W90 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4W90 FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><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></td></tr> | </td></tr><tr id='ligand'><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></td></tr> | ||
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr> | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">U1A protein ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=4w90 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4w90 OCA], [http://pdbe.org/4w90 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4w90 RCSB], [http://www.ebi.ac.uk/pdbsum/4w90 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4w90 ProSAT]</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=4w90 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4w90 OCA], [http://pdbe.org/4w90 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4w90 RCSB], [http://www.ebi.ac.uk/pdbsum/4w90 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4w90 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
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</div> | </div> | ||
<div class="pdbe-citations 4w90" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 4w90" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Riboswitch|Riboswitch]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Human]] | |||
[[Category: Amare, A R.Ferre-D]] | [[Category: Amare, A R.Ferre-D]] | ||
[[Category: Jones, C P]] | [[Category: Jones, C P]] | ||
Revision as of 12:24, 22 November 2017
Crystal structure of Bacillus subtilis cyclic-di-AMP riboswitch ydaOCrystal structure of Bacillus subtilis cyclic-di-AMP riboswitch ydaO
Structural highlights
Function[SNRPA_HUMAN] Binds stem loop II of U1 snRNA. It is the first snRNP to interact with pre-mRNA. This interaction is required for the subsequent binding of U2 snRNP and the U4/U6/U5 tri-snRNP. In a snRNP-free form (SF-A) may be involved in coupled pre-mRNA splicing and polyadenylation process. Binds preferentially to the 5'-UGCAC-3' motif in vitro.[1] Publication Abstract from PubMedCyclic diadenosine monophosphate (c-di-AMP) is a second messenger that is essential for growth and homeostasis in bacteria. A recently discovered c-di-AMP-responsive riboswitch controls the expression of genes in a variety of bacteria, including important pathogens. To elucidate the molecular basis for specific binding of c-di-AMP by a gene-regulatory mRNA domain, we have determined the co-crystal structure of this riboswitch. Unexpectedly, the structure reveals an internally pseudo-symmetric RNA in which two similar three-helix-junction elements associate head-to-tail, creating a trough that cradles two c-di-AMP molecules making quasi-equivalent contacts with the riboswitch. The riboswitch selectively binds c-di-AMP and discriminates exquisitely against other cyclic dinucleotides, such as c-di-GMP and cyclic-AMP-GMP, via interactions with both the backbone and bases of its cognate second messenger. Small-angle X-ray scattering experiments indicate that global folding of the riboswitch is induced by the two bound cyclic dinucleotides, which bridge the two symmetric three-helix domains. This structural reorganization likely couples c-di-AMP binding to gene expression. Crystal structure of a c-di-AMP riboswitch reveals an internally pseudo-dimeric RNA.,Jones CP, Ferre-D'Amare AR EMBO J. 2014 Sep 30. pii: e201489209. PMID:25271255[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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