Catalytic activity:Arachidonate + AH (2) + 2 O (2) = prostaglandin H (2) + A + H (2) O. ,cofactor:Binds 1 heme B (iron-protoporphyrin IX) group per subunit. ,Disease:Likely to play a role in inflammatory diseases such as rheumatoid arthritis. ,Function:May have a role as a major mediator of inflammation and/or a role for prostanoid signaling in activity-dependent plasticity. ,induction:By cytokines and mitogens. ,miscellaneous:This enzyme acts both as a dioxygenase and as a peroxidase. ,miscellaneous:This enzyme is the target of nonsteroidal anti-inflammatory drugs such as aspirin. ,pathway:Lipid metabolism; prostaglandin biosynthesis. ,similarity:Belongs to the prostaglandin G/H synthase family. ,similarity:Contains 1 EGF-like domain. ,subunit:Homodimer. ,
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