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Medical Term:

prostaglandin endoperoxide synthase


Definition: a protein complex that catalyzes two steps in prostaglandin biosynthesis; the cyclooxygenase activity (which is inhibited by aspirin and indomethacin) converts arachidonate and 2O2 to prostaglandin G2; the hydroperoxidase activity uses glutathione to convert prostaglandin G2 to prostaglandin H2.

Synonym(s): cyclooxygenase

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