Skip Navigation
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Your Environment. Your Health.

Publication Detail

Title: Dynamic action of DNA repair proteins as revealed by single molecule techniques: Seeing is believing.

Authors: Kong, Muwen; Beckwitt, Emily C; Van Houten, Bennett

Published In DNA Repair (Amst), (2020 09)

Abstract: DNA repair is a highly dynamic process in which the actual damage recognition process occurs through an amazing dance between the DNA duplex containing the lesion and the DNA repair proteins. Single molecule investigations have revealed that DNA repair proteins solve the speed-stability paradox, of rapid search versus stable complex formation, by conformational changes induced in both the damaged DNA and the repair proteins. Using Rad4, XPA, PARP1, APE1, OGG1 and UV-DDB as examples, we have discovered how these repair proteins limit their travel on DNA, once a lesion is encountered through a process of anomalous diffusion. We have also observed how PARP1 and APE1, as well as UV-DDB and OGG1 or APE1, co-localize dynamically at sites near DNA damage. This review highlights how our group has greatly benefited from our productive collaborations with Sam Wilson's research group.

PubMed ID: 33087275 Exiting the NIEHS site

MeSH Terms: DNA Damage*; DNA Glycosylases/metabolism; DNA Repair Enzymes/metabolism*; DNA Repair*; DNA-(Apurinic or Apyrimidinic Site) Lyase/metabolism; DNA/metabolism; Humans; Mutagenicity Tests; Poly (ADP-Ribose) Polymerase-1/metabolism; Single Molecule Imaging/methods*; Xeroderma Pigmentosum Group A Protein/metabolism

to Top