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New England Biolabs, Inc. APE 1 – 1000 units

Supplier: New England Biolabs, Inc. M0282S
Human apurinic/apyrimidinic (AP) endonuclease, APE 1, also known as HAP 1 or Ref-1, shares homology with Escherichia coli exonuclease III protein. APE 1 cleaves the phosphodiester backbone immediately 5 to an AP site, via hydrolytic mechanism, to generate a single-strand DNA break leaving a 3-hydroxyl and 5-deoxyribose phosphate terminus. Besides AP endonuclease activity, APE 1 has also been reported to have weak DNA 3 -diesterase, 3 to 5 exonuclease and RNase H activities (3-5). In addition to DNA repair activity, APE 1 is also capable of regulating the DNA binding activity of many transcription factors in vitro by a redox mechanism. As part of this process, APE 1 has been shown to stimulate the DNA binding activity of Fos-Jun heterodimers, Jun-Jun homodimers and Hela cell AP-1 proteins as well as that of several other transcription factors including NF-kB, Myb and members of the ATF/CREB family.
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