446d

<StructureSection load='446d' size='340' side='right' caption='[[446d]], [[Resolution|resolution]] 3.00&Aring;' scene=''>

<table><tr><td colspan='2'>[[446d]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=446D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=446D FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NI:NICKEL+(II)+ION'>NI</scene></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=446d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=446d OCA], [http://pdbe.org/446d PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=446d RCSB], [http://www.ebi.ac.uk/pdbsum/446d PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=446d ProSAT]</span></td></tr>

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== Publication Abstract from PubMed ==

In this paper we explore the application of Ni2+to the crystallization of oligonucleotides. We have determined in this way the structure of a fully alternating (Y-R) decanucleotide d(CGTATATACG) by single crystal X-ray diffraction. This is the first oligonucleotide crystal structure with an alternating 5'-(TA)3-3' central part. Alternating oligonucleotides have a particular interest since they often have a unique structure. In this case the general conformation is B-like with an alternating twist and an end-to-end interaction which involves terminal guanines. The crystal belongs to space group P41212 with a = b = 52.46, c = 101.49 A. This packing imposes a 90 degrees crossing of the symmetry related helices. This is a new way of packing for decamers.The oligonucleotide structure is characterized by the specific association with seven nickel ions, involving the N7 atom of every guanine. One of the Ni2+ions is shared between two guanines of symmetry related molecules. Until now no oligonucleotide has been crystallized in the presence of this metal ion. A novel C.A.T triplet structure has also been tentatively identified.

Structure of the oligonucleotide d(CGTATATACG) as a site-specific complex with nickel ions.,Abrescia NG, Malinina L, Fernandez LG, Huynh-Dinh T, Neidle S, Subirana JA Nucleic Acids Res. 1999 Apr 1;27(7):1593-9. PMID:10075989<ref>PMID:10075989</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 446d" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Abrescia, N G.A]]

[[Category: Gonzaga, L F]]

[[Category: Huynh-Dinh, T]]

[[Category: Malinina, L]]

[[Category: Neidle, S]]

[[Category: Subirana, J A]]

[[Category: Triple helix]]