1da2

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[[Image:1da2.png|left|200px]]
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==MOLECULAR AND CRYSTAL STRUCTURE OF D(CGCGMO4CG): N4-METHOXYCYTOSINE/GUANINE BASE-PAIRS IN Z-DNA==
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<StructureSection load='1da2' size='340' side='right' caption='[[1da2]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1da2]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DA2 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DA2 FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=C45:N4-METHOXY-2-DEOXY-CYTIDINE-5-MONOPHOSPHATE'>C45</scene></td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1da2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1da2 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1da2 RCSB], [http://www.ebi.ac.uk/pdbsum/1da2 PDBsum]</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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The base analogue N4-methoxycytosine (mo4C) is ambivalent in its hydrogen-bonding potential, since it forms stable base-pairs with both adenine and guanine in oligomer duplexes. To investigate the base-pair geometry, the structure of d(CGCGmo4CG) has been determined by single-crystal X-ray diffraction techniques. The d(CGCGmo4CG)2 crystallized in a left-handed double helical structure (Z-type). Refinement using 2559 reflections between 10 and 1.7 A converged with a final R = 0.181 (Rw = 0.130) including 68 solvent molecules. The orthorhombic crystals are in the space group P2(1)2(1)2(1), with cell dimensions a = 18.17 A, b = 30.36 A, c = 43.93 A. The mo4C.G base-pair is of the wobble type, with mo4C in the imino form, and the methoxy group in the syn configuration.
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{{STRUCTURE_1da2| PDB=1da2 | SCENE= }}
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Molecular and crystal structure of d(CGCGmo4CG): N4-methoxycytosine.guanine base-pairs in Z-DNA.,Van Meervelt L, Moore MH, Lin PK, Brown DM, Kennard O J Mol Biol. 1990 Dec 5;216(3):773-81. PMID:2258939<ref>PMID:2258939</ref>
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===MOLECULAR AND CRYSTAL STRUCTURE OF D(CGCGMO4CG): N4-METHOXYCYTOSINE/GUANINE BASE-PAIRS IN Z-DNA===
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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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{{ABSTRACT_PUBMED_2258939}}
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== References ==
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<references/>
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==About this Structure==
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__TOC__
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[[1da2]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DA2 OCA].
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</StructureSection>
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==Reference==
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<ref group="xtra">PMID:002258939</ref><references group="xtra"/>
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[[Category: Brown, D M.]]
[[Category: Brown, D M.]]
[[Category: Kennard, O.]]
[[Category: Kennard, O.]]

Revision as of 05:49, 8 June 2014

MOLECULAR AND CRYSTAL STRUCTURE OF D(CGCGMO4CG): N4-METHOXYCYTOSINE/GUANINE BASE-PAIRS IN Z-DNA

1da2, resolution 1.70Å

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