Structural highlights
Function
S6B9Y3_BABBO Plays a role in mitochondrial DNA base excision repair (BER) pathway induced by oxidative stress. Has apurinic/apyrimidinic (AP) endonuclease activity towards double-stranded DNA (dsDNA) with a preference for C as opposite base. Has 3'-phosphatase activity; removes 3'-phosphate from blunt-end, recessed, and gapped DNA templates and thus, removes 3'-blocks for DNA polymerase activity during BER. Lacks 3'-5' exonuclease activity and does not cleave damaged bases by nucleotide incision repair (NIR).[ARBA:ARBA00054483]