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Crystallographic structure of human persulfide dioxygenase (ETHE1). (a) Cartoon representation of human ETHE1 homodimer (PDB ID: 4CHL; 2.61 Å resolution). (b) Zoom-in into the mononuclear nonheme iron catalytic site. Iron ligands (His79, His135, and Asp154; human ETHE1 numbering) are represented in sticks. Figure generated with PyMol 1.8.2.0 [238].
