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458d

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{{STRUCTURE_458d| PDB=458d | SCENE= }}
{{STRUCTURE_458d| PDB=458d | SCENE= }}
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'''DNA MINOR-GROOVE RECOGNITION OF A TRIS-BENZIMIDAZOLE DRUG BY A NON-SELF-COMPLEMENTARY AT-RICH SEQUENCE'''
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===DNA MINOR-GROOVE RECOGNITION OF A TRIS-BENZIMIDAZOLE DRUG BY A NON-SELF-COMPLEMENTARY AT-RICH SEQUENCE===
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==Overview==
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The crystal structure of the non-self-complementary dodecamer DNA duplex formed by d(CG[5BrC]ATAT-TTGCG) and d(CGCAAATATGCG) has been solved to 2.3 A resolution, together with that of its complex with the tris-benzimidazole minor groove binding ligand TRIBIZ. The inclusion of a bromine atom on one strand in each structure enabled the possibility of disorder to be discounted. The native structure has an exceptional narrow minor groove, of 2.5-2.6 A in the central part of the A/T region, which is increased in width by approximately 0.8 A on drug binding. The ligand molecule binds in the central part of the sequence. The benzimidazole subunits of the ligand participate in six bifurcated hydrogen bonds with A:T base pair edges, three to each DNA strand. The presence of a pair of C-H...O hydrogen bonds has been deduced from the close proximity of the pyrrolidine group of the ligand to the TpA step in the sequence.
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(as it appears on PubMed at http://www.pubmed.gov), where 10373586 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10373586}}
==About this Structure==
==About this Structure==
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[[Category: B-dna]]
[[Category: B-dna]]
[[Category: Deoxyribonucleic acid]]
[[Category: Deoxyribonucleic acid]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 22:18:52 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Jul 3 13:22:39 2008''

Revision as of 10:22, 3 July 2008

Image:458d.png

Template:STRUCTURE 458d

DNA MINOR-GROOVE RECOGNITION OF A TRIS-BENZIMIDAZOLE DRUG BY A NON-SELF-COMPLEMENTARY AT-RICH SEQUENCE

Template:ABSTRACT PUBMED 10373586

About this Structure

Full crystallographic information is available from OCA.

Reference

DNA minor groove recognition of a non-self-complementary AT-rich sequence by a tris-benzimidazole ligand., Aymami J, Nunn CM, Neidle S, Nucleic Acids Res. 1999 Jul 1;27(13):2691-8. PMID:10373586

Page seeded by OCA on Thu Jul 3 13:22:39 2008

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