DNA 3'-5' translocase XPB

UniProtKB accession:  O29889

Grouped By:  Matching UniProtKB accession

UniProtKB description:  ATP-dependent DNA translocase which moves along double-stranded DNA (dsDNA) in a 3'-5' direction, unwinding the DNA (PubMed:16600867, PubMed:29285929, PubMed:37874269). Unwinds DNA with a 3'-overhang but not a 5'-overhang or blunt-ended undamaged DNA; does unwind damaged blunt-ended DNA (cyclobutane pyrimidine dimer or thymine (6-4) thymine photoproduct) (PubMed:16600867). Binds single-stranded (ss) and dsDNA, as well as damaged DNA (PubMed:16600867). Has very low ATPase activity that is repressed by Bax1; Y-form DNA and a DNA substrate with a 6 base pair bubble in the center stimulate the XPB-Bax1 ATPase activity about 6- to 10-fold (PubMed:32374860).