1edr

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==MOLECULAR AND CRYSTAL STRUCTURE OF D(CGCGMO6AATTCGCG) AT 1.6 ANGSTROM==
==MOLECULAR AND CRYSTAL STRUCTURE OF D(CGCGMO6AATTCGCG) AT 1.6 ANGSTROM==
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<StructureSection load='1edr' size='340' side='right' caption='[[1edr]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
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<StructureSection load='1edr' size='340' side='right'caption='[[1edr]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[1edr]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EDR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1EDR FirstGlance]. <br>
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<table><tr><td colspan='2'>[[1edr]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EDR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1EDR FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SPM:SPERMINE'>SPM</scene><br>
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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]] 1.6&#8491;</td></tr>
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<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=A47:N6-METHOXY+ADENOSINE+5-MONOPHOSPHATE'>A47</scene></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=A47:N6-METHOXY+ADENOSINE+5-MONOPHOSPHATE'>A47</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SPM:SPERMINE'>SPM</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=1edr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1edr OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1edr RCSB], [http://www.ebi.ac.uk/pdbsum/1edr PDBsum]</span></td></tr>
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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=1edr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1edr OCA], [https://pdbe.org/1edr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1edr RCSB], [https://www.ebi.ac.uk/pdbsum/1edr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1edr ProSAT]</span></td></tr>
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<table>
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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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In a previous paper, 2'-deoxy-N(6)-methoxyadenosine (mo(6)A) was shown to form a mismatch base-pair with 2'-deoxycytidine with a Watson-Crick-type geometry. To fully understand the structural basis of genetic mutations with damaged DNA, it is necessary to examine whether the methoxylated adenine residue still has the ability to form the regular Watson-Crick pairing with a thymine residue. Therefore, a DNA dodecamer with the sequence d(CGCGmo(6)AATTCGCG) has been synthesized and its crystal structure determined. The methoxylation has no significant effect on the overall DNA conformation, which is that of a standard B-form duplex. The methoxylated adenine moieties adopt the amino tautomer with an anti conformation around the C(6)-N(6) bond to the N(1) atom, and they form a Watson-Crick base-pair with thymine residues on the opposite strand, similar to an unmodified adenine residue. It is concluded that methoxylated adenine can present two alternate faces for base-pairing, thanks to the amino&lt;--&gt;imino tautomerism allowed by methoxylation. Based on this property, two gene transition routes are proposed.
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Crystallographic studies on damaged DNAs. II. N(6)-methoxyadenine can present two alternate faces for Watson-Crick base-pairing, leading to pyrimidine transition mutagenesis.,Chatake T, Hikima T, Ono A, Ueno Y, Matsuda A, Takenaka A J Mol Biol. 1999 Dec 17;294(5):1223-30. PMID:10600380<ref>PMID:10600380</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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== References ==
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<references/>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Chatake, T.]]
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[[Category: Large Structures]]
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[[Category: Hikima, T.]]
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[[Category: Chatake T]]
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[[Category: Matsuda, A.]]
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[[Category: Hikima T]]
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[[Category: Ono, A.]]
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[[Category: Matsuda A]]
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[[Category: Takenaka, A.]]
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[[Category: Ono A]]
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[[Category: Ueno, Y.]]
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[[Category: Takenaka A]]
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[[Category: B-dna]]
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[[Category: Ueno Y]]
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[[Category: Damaged dna]]
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[[Category: Deoxyribonucleic acid]]
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[[Category: Dna]]
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[[Category: Double helix]]
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[[Category: Methoxyadenosine]]
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[[Category: Modified nucleotide]]
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Current revision

MOLECULAR AND CRYSTAL STRUCTURE OF D(CGCGMO6AATTCGCG) AT 1.6 ANGSTROM

PDB ID 1edr

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