View source for 8his


==Crystal structure of DNA decamer containing GuNA[Me,tBu]==
<StructureSection load='8his' size='340' side='right'caption='[[8his]], [[Resolution|resolution]] 2.01&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8his]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8HIS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8HIS FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.01&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CAD:CACODYLIC+ACID'>CAD</scene>, <scene name='pdbligand=LR6:[(1R,3R,4R,7S)-5-(N-tert-butyl-N-methyl-carbamimidoyl)-3-[5-methyl-2,4-bis(oxidanylidene)pyrimidin-1-yl]-7-oxidanyl-2-oxa-5-azabicyclo[2.2.1]heptan-1-yl]methyl+dihydrogen+phosphate'>LR6</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=8his FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8his OCA], [https://pdbe.org/8his PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8his RCSB], [https://www.ebi.ac.uk/pdbsum/8his PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8his ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Antisense oligonucleotides (ASOs) are becoming a promising class of drugs for treating various diseases. Over the past few decades, many modified nucleic acids have been developed for application to ASOs, aiming to enhance their duplex-forming ability toward cognate mRNA and improve their stability against enzymatic degradations. Modulating the sugar conformation of nucleic acids by substituting an electron-withdrawing group at the 2'-position or incorporating a 2',4'-bridging structure is a common approach for enhancing duplex-forming ability. Here, we report on incorporating an N-tert-butylguanidinium group at the 2',4'-bridging structure, which greatly enhances duplex-forming ability because of its interactions with the minor groove. Our results indicated that hydrophobic substituents fitting the grooves of duplexes also have great potential to increase duplex-forming ability.

Mechanism of the extremely high duplex-forming ability of oligonucleotides modified with N-tert-butylguanidine- or N-tert-butyl-N'-methylguanidine-bridged nucleic acids.,Yamaguchi T, Horie N, Aoyama H, Kumagai S, Obika S Nucleic Acids Res. 2023 Jul 18:gkad608. doi: 10.1093/nar/gkad608. PMID:37462081<ref>PMID:37462081</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8his" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Aoyama H]]
[[Category: Obika S]]
[[Category: Yamaguchi T]]