DNA helicase II Protein, E. coli, Recombinant

A helicase with DNA-dependent ATPase activity. Unwinds DNA duplexes with 3' to 5' polarity with respect to the bound strand. Initiates unwinding more efficiently from a nicked substrate than ds duplex DNA. Involved in the post-incision events of nucleotide excision repair and methyl-directed mismatch repair, and probably also in repair of alkylated DNA. DNA helicase II Protein, E. coli, Recombinant is expressed in E. coli expression system. The predicted molecular weight is 82.0 kDa and the accession number is P03018.