Photocross-linking of the homing endonuclease PI-SceI to its recognition sequence.

  title={Photocross-linking of the homing endonuclease PI-SceI to its recognition sequence.},
  author={Vera Pingoud and Hubert H. Thole and Frank Christ and W. Grindl and Wolfgang Wende and Alfred Pingoud},
  journal={The Journal of biological chemistry},
  volume={274 15},
PI-SceI is an intein-encoded protein that belongs to the LAGLIDADG family of homing endonucleases. According to the crystal structure and mutational studies, this endonuclease consists of two domains, one responsible for protein splicing, the other for DNA cleavage, and both presumably for DNA binding. To define the DNA binding site of PI-SceI, photocross-linking was used to identify amino acid residues in contact with DNA. Sixty-three double-stranded oligodeoxynucleotides comprising the… CONTINUE READING