6r6d: Difference between revisions
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<StructureSection load='6r6d' size='340' side='right'caption='[[6r6d]], [[Resolution|resolution]] 1.84Å' scene=''> | <StructureSection load='6r6d' size='340' side='right'caption='[[6r6d]], [[Resolution|resolution]] 1.84Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[6r6d]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6R6D OCA]. For a <b>guided tour on the structure components</b> use [ | <table><tr><td colspan='2'>[[6r6d]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6R6D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6R6D FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BA:BARIUM+ION'>BA</scene>, <scene name='pdbligand=EQQ:Ruthenium+(bis-(tetraazaphenanthrene))+(11,12-dicyano-dipyridophenazine)'>EQQ</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BA:BARIUM+ION'>BA</scene>, <scene name='pdbligand=EQQ:Ruthenium+(bis-(tetraazaphenanthrene))+(11,12-dicyano-dipyridophenazine)'>EQQ</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6r6d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6r6d OCA], [https://pdbe.org/6r6d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6r6d RCSB], [https://www.ebi.ac.uk/pdbsum/6r6d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6r6d ProSAT]</span></td></tr> | ||
</table> | </table> | ||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The new complexes [Ru(TAP)2 (11-CN-dppz)](2+) , [Ru(TAP)2 (11-Br-dppz)](2+) and [Ru(TAP)2 (11,12-diCN-dppz)](2+) are reported. The addition of nitrile substituents to the dppz ligand of the DNA photo-oxidising complex [Ru(TAP)2 (dppz)](2+) promote pi-stacking interactions and ordered binding to DNA, as shown by X-ray crystallography. The structure of Lambda-[Ru(TAP)2 (11-CN-dppz)](2+) with the DNA duplex d(TCGGCGCCGA)2 shows, for the first time with this class of complex, a closed intercalation cavity with an AT base pair at the terminus. The structure obtained is compared to that formed with the 11-Br and 11,12-dinitrile derivatives, highlighting the stabilization of syn guanine by this enantiomer when the terminal base pair is GC. In contrast the AT base pair has the normal Watson-Crick orientation, highlighting the difference in charge distribution between the two purine bases and the complementarity of the dppz-purine interaction. The asymmetry of the cavity highlights the importance of the purine-dppz-purine stacking interaction. | |||
X-ray Crystal Structures Show DNA Stacking Advantage of Terminal Nitrile Substitution in Ru-dppz Complexes.,McQuaid K, Hall JP, Brazier JA, Cardin DJ, Cardin CJ Chemistry. 2018 Oct 22;24(59):15859-15867. doi: 10.1002/chem.201803021. Epub 2018, Oct 1. PMID:30063271<ref>PMID:30063271</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 6r6d" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Latest revision as of 13:14, 19 May 2021
[Ru(TAP)2(11,12-CN2-dppz)]2+ bound to d(TCGGCGCCGA)2[Ru(TAP)2(11,12-CN2-dppz)]2+ bound to d(TCGGCGCCGA)2
Structural highlights
Publication Abstract from PubMedThe new complexes [Ru(TAP)2 (11-CN-dppz)](2+) , [Ru(TAP)2 (11-Br-dppz)](2+) and [Ru(TAP)2 (11,12-diCN-dppz)](2+) are reported. The addition of nitrile substituents to the dppz ligand of the DNA photo-oxidising complex [Ru(TAP)2 (dppz)](2+) promote pi-stacking interactions and ordered binding to DNA, as shown by X-ray crystallography. The structure of Lambda-[Ru(TAP)2 (11-CN-dppz)](2+) with the DNA duplex d(TCGGCGCCGA)2 shows, for the first time with this class of complex, a closed intercalation cavity with an AT base pair at the terminus. The structure obtained is compared to that formed with the 11-Br and 11,12-dinitrile derivatives, highlighting the stabilization of syn guanine by this enantiomer when the terminal base pair is GC. In contrast the AT base pair has the normal Watson-Crick orientation, highlighting the difference in charge distribution between the two purine bases and the complementarity of the dppz-purine interaction. The asymmetry of the cavity highlights the importance of the purine-dppz-purine stacking interaction. X-ray Crystal Structures Show DNA Stacking Advantage of Terminal Nitrile Substitution in Ru-dppz Complexes.,McQuaid K, Hall JP, Brazier JA, Cardin DJ, Cardin CJ Chemistry. 2018 Oct 22;24(59):15859-15867. doi: 10.1002/chem.201803021. Epub 2018, Oct 1. PMID:30063271[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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