Crystal structure of the DNA repair enzyme ultraviolet damage endonuclease

Paspaleva, Keti and Thomassen, Ellen and Pannu, Navraj S. and Iwai, Shigenori and Moolenaar, Geri F. and Goosen, Nora and Abrahams, Jan Pieter. (2007) Crystal structure of the DNA repair enzyme ultraviolet damage endonuclease. Structure, 15 (10). pp. 1316-1324.

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The ultraviolet damage endonuclease (UVDE) performs the initial step in an alternative excision repair pathway of UV-induced DNA damage, nicking immediately adjacent to the 5 ' phosphate of the damaged nucleotides. Unique for a single-protein DNA repair endonuclease, it can detect different types of damage. Here we show that Thermus thermophilus UVDE shares some essential structural features with Endo IV, an enzyme from the base excision repair pathway that exclusively nicks at abasic sites. A comparison between the structures indicates how DNA is bound by UVDE, how UVDE may recognize damage, and which of its residues are involved in catalysis. Furthermore, the comparison suggests an elegant explanation of UVDE's potential to recognize different types of damage. Incision assays including point mutants of UVDE confirmed the relevance of these conclusions.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Structural Biology & Biophysics > Nano-diffraction of Biological Specimen (Abrahams)
UniBasel Contributors:Abrahams, Jan Pieter
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Cell Press
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:06 Nov 2020 09:42
Deposited On:06 Nov 2020 09:42

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