Nanoparticles offer insights into interactions between single-stranded DNA and their binding proteins

Double-stranded DNA must disentangle itself into single strands during replication or repair to allow functional molecules to bind and perform their various operations. Cellular proteins specifically bind to single-stranded DNA to prevent their premature recombination. Unfortunately, detailed studies of these DNA–protein interactions have been hindered by the need for expensive instrumentation and time-consuming labelling techniques. Yen Nee Tan at the A*STAR Institute of Materials Research and Engineering and co-workers1 have now developed a convenient method to characterize the interactions between single-stranded DNA and their binding proteins.

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