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==CRYSTAL STRUCTURE AT 1.5 ANGSTROMS RESOLUTION OF D(CGCICICG), AN OCTANUCLEOTIDE CONTAINING INOSINE, AND ITS COMPARISON WITH D(CGCG) AND D(CGCGCG) STRUCTURES==
==CRYSTAL STRUCTURE AT 1.5 ANGSTROMS RESOLUTION OF D(CGCICICG), AN OCTANUCLEOTIDE CONTAINING INOSINE, AND ITS COMPARISON WITH D(CGCG) AND D(CGCGCG) STRUCTURES==
<StructureSection load='1d53' size='340' side='right' caption='[[1d53]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
<StructureSection load='1d53' size='340' side='right'caption='[[1d53]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1d53]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1D53 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1D53 FirstGlance]. <br>
<table><tr><td colspan='2'>[[1d53]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1D53 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1D53 FirstGlance]. <br>
</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=1d53 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1d53 OCA], [http://pdbe.org/1d53 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1d53 RCSB], [http://www.ebi.ac.uk/pdbsum/1d53 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1d53 ProSAT]</span></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.5&#8491;</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=1d53 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1d53 OCA], [https://pdbe.org/1d53 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1d53 RCSB], [https://www.ebi.ac.uk/pdbsum/1d53 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1d53 ProSAT]</span></td></tr>
</table>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The octadeoxyribonucleotide d(CGCICICG) has been crystallized in space group P(6)5(22) with unit cell dimensions of a = b = 31.0 A and c = 43.7 A, and X-ray diffraction data have been collected to 1.5-A resolution. Precession photographs and the self-Patterson function indicate that 12 base pairs of Z-conformation DNA stack along the c-axis, and the double helices pack in a hexagonal array similar to that seen in other crystals of Z-DNA. The structure has been solved by both Patterson deconvolution and molecular replacement methods and refined in space group P(6)5 to an R factor of 0.225 using 2503 unique reflections greater than 3.0 sigma (F). Comparison of the molecules within the hexagonal lattice with highly refined crystal structures of other Z-DNA reveals only minor conformational differences, most notably in the pucker of the deoxyribose of the purine residues. The DNA has multiple occupancy of C:I and C:G base pairs, and C:I base pairs adopt a conformation similar to that of C:G base pairs.
Crystal structure at 1.5-A resolution of d(CGCICICG), an octanucleotide containing inosine, and its comparison with d(CGCG) and d(CGCGCG) structures.,Kumar VD, Harrison RW, Andrews LC, Weber IT Biochemistry. 1992 Feb 11;31(5):1541-50. PMID:1737011<ref>PMID:1737011</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1d53" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Andrews, L C]]
[[Category: Large Structures]]
[[Category: Harrison, R W]]
[[Category: Andrews LC]]
[[Category: Kumar, V D]]
[[Category: Harrison RW]]
[[Category: Weber, I T]]
[[Category: Kumar VD]]
[[Category: Dna]]
[[Category: Weber IT]]
[[Category: Double helix]]
[[Category: Z-dna]]

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