DNase I Footprinting of Small Molecule Binding Sites on DNA
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Last Update: 2021-02-27
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Source: Internet
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Author: User
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Nuclease footprinting techniques were initially developed to investigate protein-deoxyribonucleic acid (
DNA
) interactions but these tools of molecular biology have also become instrumental for probing sequence-selective binding of small molecules to DNA. Here, the method is described and technical details are given for performing deoxyribonuclease (DNase) I footprinting with DNA-binding drugs. An example is presented where DNase I is used (as well as DNase II and micrococcal nuclease) to probe the patterns of sequence-selective recognition of DNA by the anticancer antibiotic actinomycin D. DNase I is a convenient endonuclease for detecting and locating the position of actinomycin-binding sites within GC-rich sequences.
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