is broken down into amino acids before being absorbed. However, ingestion of SOD bound to wheat proteins could improve its therapeutic activity, at least in theory. See also Catalase Glutathione peroxidase Jiaogulan NADPH oxidase, an enzyme which produces superoxide Peroxidase References External links (ALS) The ALS Online Database A short but substantive overview of SOD and its literature. Damage-Based Theories of Aging Includes a discussion of the roles of SOD1 and SOD2 in aging. Physicians' Comm. For Responsible Med. SOD and Oxidative Stress Pathway Image PDBe-KB provides an overview of all the structure information available in the PDB for Human Superoxide dismutase [Cu-Zn] PDBe-KB provides an overview of all the structure information available in the PDB for Human Superoxide dismutase [Mn], mitochondrial PDBe-KB provides an overview of all the structure information available in the PDB for Human Extracellular superoxide dismutase [Cu-Zn] Antioxidants Metalloproteins Oxidoreductases EC 1.15.1 Copper enzymes Aging-related enzymes Iron enzymes Zinc enzymes Nickel enzymes Manganese enzymes