Manganese superoxide dismutase 3 nitrotyrosine 4 Catalytic Domain 4 Enzymes 4 Humans 4 Superoxide Dismutase 4 Tyrosine 4 enzyme active site 4 enzyme inactivation 4 manganese superoxide dismutase 4 nitration 4 priority journal 4 7-hydroxycoumarin 2 Active site modeling 2 Amino acids 2 Article 2 Atomic-level resolution 2 Blotting, Western 2 Catalysis 2 Crystal structure 2 Enzyme Activation 2 Enzyme inactivation 2 Fluorescence 2 Free energy 2 Galactose oxidase 2 Kinetics 2 Ligand migration 2 MSMD 2 Manganese 2 Metalloenzymes 2