Destroys superoxide anion radicals which are normally produced within the cells and which are toxic to biological systems. Genetic variation in SOD2 is associated with susceptibility to microvascular complications of diabetes type 6 (MVCD6). These are pathological conditions that develop in numerous tissues and organs as a consequence of diabetes mellitus. They include diabetic retinopathy, diabetic nephropathy leading to end-stage renal disease, and diabetic neuropathy. Diabetic retinopathy remains the major cause of new- onset blindness among diabetic adults. It is characterized by vascular permeability and increased tissue ischemia and angiogenesis. Belongs to the iron/manganese superoxide dismutase family. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: EC 220.127.116.11; Mitochondrial; Oxidoreductase
Molecular Function: identical protein binding; manganese ion binding; superoxide dismutase activity
Biological Process: acetylcholine vasodilation involved in regulation of systemic arterial blood pressure; age-dependent response to reactive oxygen species; negative regulation of cell proliferation; negative regulation of neuron apoptosis; oxygen homeostasis; protein homotetramerization; regulation of blood pressure; regulation of transcription from RNA polymerase II promoter; release of cytochrome c from mitochondria; removal of superoxide radicals; response to reactive oxygen species; response to superoxide; superoxide metabolic process