35464 NthThalassiosira pseudonana
GO:0003677 GO:0006284 GO:0003906 -
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
In base excision repair, an altered base is removed by a DNA glycosylase enzyme, followed by excision of the resulting sugar phosphate. The small gap left in the DNA helix is filled in by the sequential action of DNA polymerase and DNA ligase.
DNA-(apurinic or apyrimidinic site) lyase activity
Catalysis of the cleavage of the C-O-P bond 3' to the apurinic or apyrimidinic site in DNA by a beta-elimination reaction, leaving a 3'-terminal unsaturated sugar and a product with a terminal 5'-phosphate.