>TIGR01083 nth endonuclease III; InterPro: IPR005759 The spectrum of DNA damage caused by reactive oxygen species includes a wide variety of modifications of purine and pyrimidine bases. Among these modified bases, 7,8-dihydro-8-oxoguanine (8-oxoG) is an important mutagenic lesion. Base excision repair is a critical mechanism for preventing mutations by removing the oxidative lesion from the DNA. Escherichia coli Nth protein (endonuclease III) has an 8-oxoG DNA glycosylase/AP lyase activity which removes 8-oxoG preferentially from 8-oxoG/G mispairs. Human hNTH1 protein, a homolog of E. coli Nth protein, has similar DNA glycosylase/AP lyase activity that removes 8-oxoG from 8-oxoG/G mispairs . ; GO: 0003906 DNA-(apurinic or apyrimidinic site) lyase activity, 0006284 base-excision repair, 0005622 intracellular.

Probab=93.01  E-value=0.038  Score=35.84  Aligned_cols=18  Identities=28%  Similarity=0.569  Sum_probs=13.9

Q ss_pred             HHHHHHCCCCCHHHHHHH
Q ss_conf             999975689995379999
Q gi|254780762|r   14 IKILARIPGFGPRSARRA   31 (201)
Q Consensus        14 I~~l~kLPGIG~KsA~R~   31 (201)
T Consensus       106 ~~eL~~LPGVGRKTANVV  123 (192)
T TIGR01083       106 REELVKLPGVGRKTANVV  123 (192)
T ss_pred             HHHHHCCCCCCCHHHHHH
T ss_conf             376617899871145624