197d

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[[Image:197d.gif|left|200px]]
 
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{{Structure
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==ORTHORHOMBIC CRYSTAL STRUCTURE OF THE A-DNA OCTAMER D(GTACGTAC). COMPARISON WITH THE TETRAGONAL STRUCTURE==
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|PDB= 197d |SIZE=350|CAPTION= <scene name='initialview01'>197d</scene>, resolution 2.190&Aring;
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<StructureSection load='197d' size='340' side='right'caption='[[197d]], [[Resolution|resolution]] 2.19&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND=
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<table><tr><td colspan='2'>[[197d]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=197D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=197D FirstGlance]. <br>
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|ACTIVITY=
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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]] 2.19&#8491;</td></tr>
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|GENE=
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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=197d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=197d OCA], [https://pdbe.org/197d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=197d RCSB], [https://www.ebi.ac.uk/pdbsum/197d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=197d ProSAT]</span></td></tr>
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}}
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</table>
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__TOC__
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'''ORTHORHOMBIC CRYSTAL STRUCTURE OF THE A-DNA OCTAMER D(GTACGTAC). COMPARISON WITH THE TETRAGONAL STRUCTURE'''
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</StructureSection>
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[[Category: Large Structures]]
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[[Category: Courseille C]]
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==Overview==
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[[Category: Dautant A]]
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The X-ray crystal structure of the double-helical A-DNA octanucleotide d(GTACGTAC) has been solved by molecular replacement and refined to a resolution of 0.219 nm. The final R-factor is equal to 16.1% for 1516 observed reflections with F &gt; 4 sigma(F). The sequence crystallizes as an A-DNA-type double helix in the orthorhombic space group P2(1)2(1)2, with one duplex molecule solvated by 66 water molecules in the asymmetric unit. Cell parameters are a = 3.860 nm, b = 5.082 nm, c = 2.174 nm. It is the first time that such a crystal form has been observed. This orthorhombic structure has been compared with the tetragonal structure of the same oligonucleotide. It adopts a bent structure with an unusual packing between symmetry-related molecules.
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[[Category: Langlois D'Estaintot B]]
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[[Category: Precigoux G]]
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==About this Structure==
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197D is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/ ]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=197D OCA].
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==Reference==
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Orthorhombic crystal structure of the A-DNA octamer d(GTACGTAC). Comparison with the tetragonal structure., Langlois d'Estaintot B, Dautant A, Courseille C, Precigoux G, Eur J Biochem. 1993 Apr 15;213(2):673-82. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8477741 8477741]
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[[Category: Protein complex]]
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[[Category: Courseille, C.]]
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[[Category: Dautant, A.]]
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[[Category: Estaintot, B Langlois D.]]
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[[Category: Precigoux, G.]]
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[[Category: a-dna]]
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[[Category: double helix]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 09:50:49 2008''
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Current revision

ORTHORHOMBIC CRYSTAL STRUCTURE OF THE A-DNA OCTAMER D(GTACGTAC). COMPARISON WITH THE TETRAGONAL STRUCTURE

PDB ID 197d

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