The base excision repair (BER) pathway historically has been associated with maintaining genome integrity by eliminating nucleobases with small chemical modifications. In the past several years, however, BER was found to play additional roles in genome maintenance and metabolism, including sequence-specific restriction modification and repair of bulky adducts and interstrand crosslinks. Central to this expanded biological utility are specialized DNA glycosylases - enzymes that selectively excise damaged, modified, or mismatched nucleobases. In this review we discuss the newly identified roles of the BER pathway and examine the structural and mechanistic features of the DNA glycosylases that enable these functions.
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Florida State Univ, Dept Biomed Sci, Coll Med, Tallahassee, FL 32306 USAFlorida State Univ, Dept Biomed Sci, Coll Med, Tallahassee, FL 32306 USA
Kumar, Adarsh
Reed, Andrew J.
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Ohio State Univ, Ohio State Biochem Program, Columbus, OH 43210 USAFlorida State Univ, Dept Biomed Sci, Coll Med, Tallahassee, FL 32306 USA
Reed, Andrew J.
Zahurancik, Walter J.
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Ohio State Univ, Ohio State Biochem Program, Columbus, OH 43210 USAFlorida State Univ, Dept Biomed Sci, Coll Med, Tallahassee, FL 32306 USA
Zahurancik, Walter J.
Daskalova, Sasha M.
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Arizona State Univ, Biodesign Ctr BioEnerget, Tempe, AZ 85287 USA
Arizona State Univ, Sch Mol Sci, Tempe, AZ 85287 USAFlorida State Univ, Dept Biomed Sci, Coll Med, Tallahassee, FL 32306 USA
Daskalova, Sasha M.
Hecht, Sidney M.
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Arizona State Univ, Biodesign Ctr BioEnerget, Tempe, AZ 85287 USA
Arizona State Univ, Sch Mol Sci, Tempe, AZ 85287 USAFlorida State Univ, Dept Biomed Sci, Coll Med, Tallahassee, FL 32306 USA
Hecht, Sidney M.
Suo, Zucai
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Florida State Univ, Dept Biomed Sci, Coll Med, Tallahassee, FL 32306 USA
Ohio State Univ, Ohio State Biochem Program, Columbus, OH 43210 USAFlorida State Univ, Dept Biomed Sci, Coll Med, Tallahassee, FL 32306 USA