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. 1990 Jul 1;269(1):217–221. doi: 10.1042/bj2690217

Footprinting studies on the effect of echinomycin on the structure of a bent DNA fragment.

K R Fox 1, E Kentebe 1
PMCID: PMC1131555  PMID: 2375751

Abstract

The interaction of echinomycin with a kinetoplast DNA fragment which contains phased runs of adenine residues has been examined by various footprinting techniques. DNAase I footprinting confirms that all drug-binding sites contain the dinucleotide CpG. However, not all such sequences are protected. Three sites, each of which is located between two adenine tracks in the sequence GCGA, are not protected from DNAase I attack. Enhanced cleavage by DNAase I, DNAase II and micrococcal nuclease is observed in regions surrounding drug-binding sites. The results suggest that echinomycin alters the conformation of the AT tracks, making them more like an average DNA structure. Echinomycin renders adenine residues in the sequence CGA hyper-reactive to diethyl pyrocarbonate.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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