EOG8QNQBH GO:0006284 27/87 base-excision repair biological_process "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." [ISBN:0815316194] EOG8QNQBH GO:0003677 27/87 DNA binding molecular_function "Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid)." [GOC:dph, GOC:jl, GOC:tb, GOC:vw] EOG8QNQBH GO:0051539 26/87 4 iron, 4 sulfur cluster binding molecular_function "Interacting selectively and non-covalently with a 4 iron, 4 sulfur (4Fe-4S) cluster; this cluster consists of four iron atoms, with the inorganic sulfur atoms found between the irons and acting as bridging ligands." [GOC:ai, PMID:15952888, Wikipedia:Iron-sulfur_cluster] EOG8QNQBH GO:0003824 18/87 catalytic activity molecular_function "Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic." [ISBN:0198506732] EOG8QNQBH GO:0003906 7/87 DNA-(apurinic or apyrimidinic site) lyase activity molecular_function "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." [EC:4.2.99.18] EOG8QNQBH GO:0004519 2/87 endonuclease activity molecular_function "Catalysis of the hydrolysis of ester linkages within nucleic acids by creating internal breaks." [GOC:mah, ISBN:0198547684] EOG8QNQBH GO:0006974 1/87 cellular response to DNA damage stimulus biological_process "Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to its DNA from environmental insults or errors during metabolism." [GOC:go_curators]