Nucleotide Excision Repair in the Third Kingdom

Author:

Ögrünç Müge1,Becker Donald F.2,Ragsdale Stephen W.2,Sancar Aziz1

Affiliation:

1. Department of Biochemistry and Biophysics, University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599,1 and

2. Department of Biochemistry, University of Nebraska, Lincoln, Nebraska 685882

Abstract

ABSTRACT Nucleotide excision repair, a general repair mechanism for removing DNA damage, is initiated by dual incisions bracketing the lesion. In procaryotes, the dual incisions result in excision of the damage in 12- to 13-nucleotide-long oligomers, and in eucaryotes they result in excision of the damage in the form of 24- to 32-nucleotide-long oligomers. We wished to find out if Archaea perform excision repair. Using cell extracts from Methanobacterium thermoautotrophicum , we found that this organism removes UV-induced (6-4) photoproducts in the form of 10- to 11-mers by incising the sixth to seventh phosphodiester bond 5′ to the damage and the fourth phosphodiester bond 3′ to the damage.

Publisher

American Society for Microbiology

Subject

Molecular Biology,Microbiology

Reference22 articles.

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