1ENK:
reference: Crystal structure of a pyrimidine dimer-specific excision repair enzyme from bacteriophage T4: refinement at 1.45 A and X-ray analysis of the three active site mutants., Morikawa K, Ariyoshi M, Vassylyev DG, Matsumoto O, Katayanagi K, Ohtsuka E, J Mol Biol 1995 Jun 2;249(2):360-75. PMID: 7783199

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