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SOD1 is one of three oxidoreductase enzymes that is responsible for binding copper and zinc ions to highly reactive oxygen free radicals and transforming them into oxygen and hydrogen peroxide. <ref name="McCord">McCord JM, Fridovich I. Superoxide dismutase. An enzymic function for erythrocuprein (hemocuprein). J Biol Chem. 1969 Nov 25;244(22):6049-55. PMID:5389100</ref>  This occurs in a quick two step mechanism:  
SOD1 is one of three oxidoreductase enzymes that is responsible for binding copper and zinc ions to highly reactive oxygen free radicals and transforming them into oxygen and hydrogen peroxide. <ref name="McCord">McCord JM, Fridovich I. Superoxide dismutase. An enzymic function for erythrocuprein (hemocuprein). J Biol Chem. 1969 Nov 25;244(22):6049-55. PMID:5389100</ref>  This occurs in a quick two step mechanism:  


Cu2+SOD + O2− → Cu+SOD + O2
Cu(2+)SOD + O2− → Cu(+)SOD + O2


Cu+SOD + O2− + 2H+ → Cu2+SOD + H2O2<ref name="Tainer">Tainer JA, Getzoff ED, Richardson JS, Richardson DC. Structure and mechanism of copper, zinc superoxide dismutase. Nature. 1983 Nov 17-23;306(5940):284-7. PMID:6316150</ref>.
Cu(+)SOD + O2− + 2H+ → Cu(2+)SOD + H2O2<ref name="Tainer">Tainer JA, Getzoff ED, Richardson JS, Richardson DC. Structure and mechanism of copper, zinc superoxide dismutase. Nature. 1983 Nov 17-23;306(5940):284-7. PMID:6316150</ref>.


This protein is coded for by the SOD 1 gene located on chromosome 21 at position 21q22.1 from base pairs 33,031,934 to 33,041,243. <ref name="Sod1">SOD 1.  Genetics Home Reference.  U.S. National Library of Medicine; 2010</ref>
This protein is coded for by the SOD 1 gene located on chromosome 21 at position 21q22.1 from base pairs 33,031,934 to 33,041,243. <ref name="Sod1">SOD 1.  Genetics Home Reference.  U.S. National Library of Medicine; 2010</ref>