UV damage endonuclease employs a novel dual-dinucleotide flipping mechanism to recognize different DNA lesions.
Meulenbroek, E.M., Peron Cane, C., Jala, I., Iwai, S., Moolenaar, G.F., Goosen, N., Pannu, N.S.(2013) Nucleic Acids Res 41: 1363-1371
- PubMed: 23221644
- DOI: https://doi.org/10.1093/nar/gks1127
- Primary Citation of Related Structures:
3TC3, 4GLE - PubMed Abstract:
Repairing damaged DNA is essential for an organism's survival. UV damage endonuclease (UVDE) is a DNA-repair enzyme that can recognize and incise different types of damaged DNA. We present the structure of Sulfolobus acidocaldarius UVDE on its own and in a pre-catalytic complex with UV-damaged DNA containing a 6-4 photoproduct showing a novel 'dual dinucleotide flip' mechanism for recognition of damaged dipyrimidines: the two purines opposite to the damaged pyrimidine bases are flipped into a dipurine-specific pocket, while the damaged bases are also flipped into another cleft.
Organizational Affiliation:
Department of Biophysical Structural Chemistry, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands.