Designer DNA-Binding Drugs: The Crystal Structure of a Meta-Hydroxy Analogue of Hoechst 33258 Bound to d(CGCGAATTCGCG)2
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چکیده
منابع مشابه
Designer DNA-binding drugs: the crystal structure of a meta-hydroxy analogue of Hoechst 33258 bound to d(CGCGAATTCGCG)2.
An analogue of the DNA binding compound Hoechst 33258, which has the para hydroxyl group altered to be at the meta position, together with the replacement of one benzimidazole group by pyridylimidazole, has been cocrystallized with the dodecanucleotide sequence d(CGCGAATTCGCG)2. The X-ray structure has been determined at 2.2 A resolution and refined to an R factor of 20.1%. The ligand binds in ...
متن کاملSequence-dependent effects in drug-DNA interaction: the crystal structure of Hoechst 33258 bound to the d(CGCAAATTTGCG)2 duplex.
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 ...
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Spectrophotometric study of Hoechst 33258 binding to DNA has been investigated. It was shown that this ligand forms at least two types of complexes at 0.002 M and 0.02M ionic strengths of solution. One of them is strong, the other is weak. It was revealed that at 0.02M ionic strength of solution, the binding constant value by strong mode is one order higher than at 0.002M. It was obtained that ...
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متن کاملQuantitation of DNA using Hoechst 33258
An essential element of cellular and molecular biology is the ability to quantitate DNA in large numbers of samples at a sensitivity that enables determination of small amounts of sample. Here we describe a fluorescent method to quantitate DNA with Hoechst 33258 dye and the BioTek FL600 fluorescence microplate reader. This assay provides linear results over three orders of magnitude and can rou...
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ژورنال
عنوان ژورنال: Nucleic Acids Research
سال: 1996
ISSN: 0305-1048,1362-4962
DOI: 10.1093/nar/24.24.4882