2x2q

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[[Image:2x2q.jpg|left|200px]]
 
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==Crystal structure of an 'all locked' LNA duplex at 1.9 angstrom resolution==
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The line below this paragraph, containing "STRUCTURE_2x2q", creates the "Structure Box" on the page.
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<StructureSection load='2x2q' size='340' side='right'caption='[[2x2q]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[2x2q]] is a 4 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=2X2Q OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2X2Q FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CAC:CACODYLATE+ION'>CAC</scene>, <scene name='pdbligand=LCA:[(1R,3R,4R,7S)-7-HYDROXY-3-(ADENIN-9-YL)-2,5-DIOXABICYCLO[2.2.1]HEPT-1-YL]METHYL+DIHYDROGEN+PHOSPHATE'>LCA</scene>, <scene name='pdbligand=LCC:[(1R,3R,4R,7S)-7-HYDROXY-3-(5-METHYLCYTOSIN-1-YL)-2,5-DIOXABICYCLO[2.2.1]HEPT-1-YL]METHYL+DIHYDROGEN+PHOSPHATE'>LCC</scene>, <scene name='pdbligand=LCG:[(1R,3R,4R,7S)-7-HYDROXY-3-(GUANIN-9-YL)-2,5-DIOXABICYCLO[2.2.1]HEPT-1-YL]METHYL+DIHYDROGEN+PHOSPHATE'>LCG</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NCO:COBALT+HEXAMMINE(III)'>NCO</scene>, <scene name='pdbligand=TLN:[(1R,3R,4R,7S)-7-HYDROXY-3-(THYMIN-1-YL)-2,5-DIOXABICYCLO[2.2.1]HEPT-1-YL]METHYL+DIHYDROGEN+PHOSPHATE'>TLN</scene></td></tr>
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{{STRUCTURE_2x2q| PDB=2x2q | SCENE= }}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2x2q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2x2q OCA], [https://pdbe.org/2x2q PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2x2q RCSB], [https://www.ebi.ac.uk/pdbsum/2x2q PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2x2q ProSAT]</span></td></tr>
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</table>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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'Locked nucleic acids' (LNAs) are known to introduce enhanced bio- and thermostability into natural nucleic acids rendering them powerful tools for diagnostic and therapeutic applications. We present the 1.9 A X-ray structure of an 'all LNA' duplex containing exclusively modified beta-D-2'-O-4'C-methylene ribofuranose nucleotides. The helix illustrates a new type of nucleic acid geometry that contributes to the understanding of the enhanced thermostability of LNA duplexes. A notable decrease of several local and overall helical parameters like twist, roll and propeller twist influence the structure of the LNA helix and result in a widening of the major groove, a decrease in helical winding and an enlarged helical pitch. A detailed structural comparison to the previously solved RNA crystal structure with the corresponding base pair sequence underlines the differences in conformation. The surrounding water network of the RNA and the LNA helix shows a similar hydration pattern.
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===CRYSTAL STRUCTURE OF AN 'ALL LOCKED' LNA DUPLEX AT 1.9 ANGSTROM RESOLUTION===
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The crystal structure of an 'All Locked' nucleic acid duplex.,Eichert A, Behling K, Betzel C, Erdmann VA, Furste JP, Forster C Nucleic Acids Res. 2010 Oct 1;38(19):6729-36. Epub 2010 Jun 8. PMID:20530536<ref>PMID:20530536</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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The line below this paragraph, {{ABSTRACT_PUBMED_20530536}}, adds the Publication Abstract to the page
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<div class="pdbe-citations 2x2q" style="background-color:#fffaf0;"></div>
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(as it appears on PubMed at http://www.pubmed.gov), where 20530536 is the PubMed ID number.
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== References ==
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<references/>
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{{ABSTRACT_PUBMED_20530536}}
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__TOC__
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</StructureSection>
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==About this Structure==
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[[Category: Large Structures]]
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[[2x2q]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2X2Q OCA].
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[[Category: Synthetic construct]]
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[[Category: Behling K]]
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==Reference==
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[[Category: Betzel C]]
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<ref group="xtra">PMID:20530536</ref><references group="xtra"/>
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[[Category: Eichert A]]
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[[Category: Behling, K.]]
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[[Category: Erdmann VA]]
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[[Category: Betzel, C.]]
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[[Category: Foerster C]]
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[[Category: Eichert, A.]]
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[[Category: Fuerste JP]]
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[[Category: Erdmann, V A.]]
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[[Category: Foerster, C.]]
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[[Category: Fuerste, J P.]]
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Current revision

Crystal structure of an 'all locked' LNA duplex at 1.9 angstrom resolution

PDB ID 2x2q

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