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  • Title: A new ATP-independent DNA endonuclease from Schizosaccharomyces pombe that recognizes cyclobutane pyrimidine dimers and 6-4 photoproducts.
    Author: Bowman KK, Sidik K, Smith CA, Taylor JS, Doetsch PW, Freyer GA.
    Journal: Nucleic Acids Res; 1994 Aug 11; 22(15):3026-32. PubMed ID: 8065916.
    Abstract:
    We have discovered a new DNA endonuclease in the fission yeast Schizosaccharomyces pombe which recognizes cyclobutane pyrimidine dimers and (6-4) pyrimidine-pyrimidone photoproducts. S. pombe DNA endonuclease (SPDE) catalyzes a single ATP-independent incision immediately 5' to the UV photoproduct and generates termini containing 3' hydroxyl and 5' phosphoryl groups. Based on these properties, we propose that SPDE may function in a DNA repair capacity, representing the initial recognition/cleavage step of a DNA excision repair pathway.
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