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Updated: Aug 20, 2026

Genome-wide Mapping of Drug-DNA Interactions in Cells with COSMIC (Crosslinking of Small Molecules to Isolate Chromatin)
Published on: January 20, 2016
DNA-binding properties of cosmomycin D, an anthracycline with two trisaccharide chains
Renata L A Furlan1, Stephen J Watt, Leandro M Garrido
1Institute of Biomedical Sciences, University of Sao Paulo, SP, CEP 005508-900, Brazil.
Abstract:
Cosmomycin D (CosD) is the major constituent fraction isolated from a culture of Streptomyces olindensis ICB20. The ability of this compound to intercalate with double-stranded DNA was studied by gel mobility shift assays and electrospray ionization mass spectrometry (ESI-MS). ESI-MS experiments showed that the complex of CosD with 16-mer double-stranded DNA was at least as stable as a complex of daunorubicin with the same DNA sequence. This is the first study showing DNA binding properties of an anthracycline containing a beta-rhodomycinone aglycone chromophore O-linked to two trisaccharide chains.
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