Abstract
N-Methylpyrrole (Py)-N-methylimidazole-(Im) polyamides are sequence-specific DNA-binding modules that are widely used for gene regulation, as synthetic transcriptional factors and as sequence-specific DNA alkylating agents. Recently, Py-Im polyamides have been conjugated with fluorophores, resulting in conjugates that are useful for the detection of specific DNA sequences. A Förster resonance energy transfer has been observed between Cy3- and Cy5-conjugated Py-Im polyamides on the nucleosome, indicating that fluorescence-conjugated Py-Im polyamides could possibly be used to characterise protein-DNA complexes. In this minireview, we discuss recent reports regarding fluorescence-conjugated Py-Im polyamides and their future application in the characterization of protein-DNA complex formation.
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