1v3n

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{{Seed}}
 
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[[Image:1v3n.png|left|200px]]
 
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==Crystal structure of d(GCGAGAGC): the DNA quadruplex structure split from the octaplex==
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The line below this paragraph, containing "STRUCTURE_1v3n", creates the "Structure Box" on the page.
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<StructureSection load='1v3n' size='340' side='right'caption='[[1v3n]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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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'>[[1v3n]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1V3N OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1V3N FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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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]] 1.8&#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=CBR:5-BROMO-2-DEOXY-CYTIDINE-5-MONOPHOSPHATE'>CBR</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene></td></tr>
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{{STRUCTURE_1v3n| PDB=1v3n | 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=1v3n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1v3n OCA], [https://pdbe.org/1v3n PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1v3n RCSB], [https://www.ebi.ac.uk/pdbsum/1v3n PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1v3n 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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Recent genomic analyses revealed many kinds of tandem repeats of specific sequences. Some of them are related to genetic diseases, but their biological functions and structures are still unknown. Two X-ray structures of a short DNA fragment d(gcGA[G]1Agc) show that four base-intercalated duplexes are assembled to form an octaplex at a low K+ concentration, in which the eight G5 residues form a stacked double G-quartet in the central part. At a higher K+ concentration, however, the octaplex is split into just two halves. These structural features suggest a folding process of eight tandem repeats of d(ccGA[G]4Agg), according to a double Greek-key motif. Such a packaging of the repeats could facilitate slippage of a certain sequence during DNA replication, to induce increase or decrease of the repeats.
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===Crystal structure of d(GCGAGAGC): the DNA quadruplex structure split from the octaplex===
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Crystal structures of a DNA octaplex with I-motif of G-quartets and its splitting into two quadruplexes suggest a folding mechanism of eight tandem repeats.,Kondo J, Adachi W, Umeda S, Sunami T, Takenaka A Nucleic Acids Res. 2004 May 7;32(8):2541-9. Print 2004. PMID:15133122<ref>PMID:15133122</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_15133122}}, adds the Publication Abstract to the page
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<div class="pdbe-citations 1v3n" style="background-color:#fffaf0;"></div>
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(as it appears on PubMed at http://www.pubmed.gov), where 15133122 is the PubMed ID number.
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== References ==
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<references/>
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{{ABSTRACT_PUBMED_15133122}}
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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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Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1V3N OCA].
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[[Category: Kondo J]]
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[[Category: Sunami T]]
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==Reference==
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[[Category: Takenaka A]]
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Crystal structures of a DNA octaplex with I-motif of G-quartets and its splitting into two quadruplexes suggest a folding mechanism of eight tandem repeats., Kondo J, Adachi W, Umeda S, Sunami T, Takenaka A, Nucleic Acids Res. 2004 May 7;32(8):2541-9. Print 2004. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15133122 15133122]
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[[Category: Umeda S]]
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[[Category: Kondo, J.]]
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[[Category: Sunami, T.]]
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[[Category: Takenaka, A.]]
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[[Category: Umeda, S.]]
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[[Category: Base-intercalated duplex]]
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[[Category: Base-intercalated motif]]
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[[Category: Crystal struture]]
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[[Category: Deoxyribonucleic acid]]
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[[Category: Dna]]
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[[Category: G-duet]]
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[[Category: Octaplex]]
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[[Category: Quadruplex]]
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[[Category: Sheared g:a pair]]
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[[Category: X-ray analysis]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 14:47:28 2008''
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Current revision

Crystal structure of d(GCGAGAGC): the DNA quadruplex structure split from the octaplex

PDB ID 1v3n

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