Analysis of DNA interactions using single-molecule force spectroscopy

Markus Ritzefeld, Volker Walhorn, Dario Anselmetti, Norbert Sewald
2013 Amino Acids  
Protein-DNA interactions are involved in many biochemical pathways and determine the fate of the corresponding cell. Qualitative and quantitative investigations on these recognition and binding processes are of key importance for an improved understanding of biochemical processes and also for systems biology. This review article focusses on atomic force microscopy (AFM)-based singlemolecule force spectroscopy and its application to the quantification of forces and binding mechanisms that lead
more » ... the formation of protein-DNA complexes. AFM and dynamic force spectroscopy are exciting tools that allow for quantitative analysis of biomolecular interactions. Besides an overview on the method and the most important immobilization approaches, the physical basics of the data evaluation is described. Recent applications of AFM-based force spectroscopy to investigate DNA intercalation, complexes involving DNA aptamers and peptide-and protein-DNA interactions are given.
doi:10.1007/s00726-013-1474-4 pmid:23468137 fatcat:vi7atfy7pnfjfj4iwl3dchsr6m