Methyl-CpG-binding domain protein 4 (MBD4)

Mismatch-specific DNA N-glycosylase involved in DNA repair.

Has thymine glycosylase activity and is unique for G:T mismatches within methylated and unmethylated CpG websites.

Can also remove uracil or 5-fluorouracil in G:U mismatches. Has no lyase activity.