base-excision repair, AP site formation
The formation of an AP site, a deoxyribose sugar with a missing base, by DNA glycosylase which recognizes an altered base in DNA and catalyzes its hydrolytic removal. This sugar phosphate is the substrate recognized by the AP endonuclease, which cuts the DNA phosphodiester backbone at the 5' side of the altered site to leave a gap which is subsequently repaired.
GO:0006259
DNA metabolic process
is_a
GO:0006284
base-excision repair
part_of
SPAC26A3.02 SPCC1183.06 SPAPB24D3.04c SPBC23G7.11 SPAC30D11.07 SPCC965.05c