PMID: 20026584 , Related PDB id: 3KUY
Davey GE, Wu B, Dong Y, Surana U, Davey CA
DNA stretching in the nucleosome facilitates alkylation by an intercalating antitumour agent.
Nucleic Acids Res. 2010 Apr;38(6):2081-8. Epub 2009 Dec 21.
DNA stretching in the nucleosome core can cause dramatic structural distortions, which may influence compaction and factor recognition in chromatin. We find that the base pair unstacking arising from stretching-induced extreme minor groove kinking near the nucleosome centre creates a hot spot for intercalation and alkylation by a novel anticancer compound. This may have far reaching implications for how chromatin structure can influence binding of intercalator species and indicates potential for the development of site selective DNA-binding agents that target unique conformational features of the nucleosome.