PARP UK. en Protein structure of PARP complexed with inhibitor according to PDB uk from two viewpoints The ligand is not shown Ref Kinoshita Nakanishi Warizaya Iwashita Kido Hattori Fujii Inhibitorinduced structural change of the active site of human poly ADPribose polymerase Febs Lett adapted from pdb org pdb using PyMOL own