296d

<StructureSection load='296d' size='340' side='right' caption='[[296d]], [[Resolution|resolution]] 2.25&Aring;' scene=''>

<table><tr><td colspan='2'>[[296d]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=296D OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=296D FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HT:2-(4-HYDROXYPHENYL)-5-(4-METHYL-1-PIPERAZINYL)-2,5-BI-BENZIMIDAZOLE'>HT</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=296d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=296d OCA], [http://www.rcsb.org/pdb/explore.do?structureId=296d RCSB], [http://www.ebi.ac.uk/pdbsum/296d PDBsum]</span></td></tr>

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== Publication Abstract from PubMed ==

The bis-benzimidazole drug Hoechst 33258 has been co-crystallized with the dodecanucleotide sequence d(CGCAAATTTGCG)2. The structure has been solved by molecular replacement and refined to an R factor of 18.5% for 2125 reflections collected on a Xentronics area detector. The drug is bound in the minor groove, at the five base-pair site 5'-ATTTG and is in a unique orientation. This is displaced by one base pair in the 5' direction compared to previously-determined structures of this drug with the sequence d(CGCGAATTCGCG)2. Reasons for this difference in behaviour are discussed in terms of several sequence-dependent structural features of the DNA, with particular reference to differences in propeller twist and minor-groove width.

Sequence-dependent effects in drug-DNA interaction: the crystal structure of Hoechst 33258 bound to the d(CGCAAATTTGCG)2 duplex.,Spink N, Brown DG, Skelly JV, Neidle S Nucleic Acids Res. 1994 May 11;22(9):1607-12. PMID:7515488<ref>PMID:7515488</ref>

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

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== References ==

<references/>

[[Category: Brown, D G]]

[[Category: Neidle, S]]

[[Category: Skelly, J V]]

[[Category: Spink, N]]

[[Category: B-dna]]

[[Category: Double helix]]