6aqt: Difference between revisions
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==Crystal Structure of Z-DNA with 6-fold Twinning_Z3A== | ==Crystal Structure of Z-DNA with 6-fold Twinning_Z3A== | ||
<StructureSection load='6aqt' size='340' side='right' caption='[[6aqt]], [[Resolution|resolution]] 1.05Å' scene=''> | <StructureSection load='6aqt' size='340' side='right'caption='[[6aqt]], [[Resolution|resolution]] 1.05Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[6aqt]] is a 6 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6AQT OCA]. For a <b>guided tour on the structure components</b> use [http:// | <table><tr><td colspan='2'>[[6aqt]] is a 6 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6AQT OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6AQT FirstGlance]. <br> | ||
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3p4j|3p4j]]</td></tr> | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3p4j|3p4j]]</td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http:// | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6aqt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6aqt OCA], [http://pdbe.org/6aqt PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6aqt RCSB], [http://www.ebi.ac.uk/pdbsum/6aqt PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6aqt ProSAT]</span></td></tr> | ||
</table> | </table> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | |||
[[Category: Dauter, Z]] | [[Category: Dauter, Z]] | ||
[[Category: Gilski, M]] | [[Category: Gilski, M]] | ||
Revision as of 00:30, 29 October 2020
Crystal Structure of Z-DNA with 6-fold Twinning_Z3ACrystal Structure of Z-DNA with 6-fold Twinning_Z3A
Structural highlights
Publication Abstract from PubMedDNA oligomer duplexes containing alternating cytosines and guanines in their sequences tend to form left-handed helices of the Z-DNA type, with the sugar and phosphate backbone in a zigzag conformation and a helical repeat of two successive nucleotides. Z-DNA duplexes usually crystallize as hexagonally arranged parallel helical tubes, with various relative orientations and translation of neighboring duplexes. Four novel high-resolution crystal structures of d(CGCGCG)2 duplexes are described here. They are characterized by a high degree of pseudosymmetry and/or twinning, with three or four independent duplexes differently oriented in a monoclinic P21 lattice of hexagonal metric. The various twinning criteria give somewhat conflicting indications in these complicated cases of crystal pathology. The details of molecular packing in these crystal structures are compared with other known crystal forms of Z-DNA. Four highly pseudosymmetric and/or twinned structures of d(CGCGCG)2 extend the repertoire of crystal structures of Z-DNA.,Luo Z, Dauter Z, Gilski M Acta Crystallogr D Struct Biol. 2017 Nov 1;73(Pt 11):940-951. doi:, 10.1107/S2059798317014954. Epub 2017 Oct 30. PMID:29095165[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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