該基因編碼細胞色素P450酶超家族的一個成員細胞色素p450蛋白是一種單加氧酶，催化藥物代謝和膽固醇、類固醇等脂類的合成。然而，根據序列相似性而非功能相似性，該蛋白被認為是細胞色素p450超家族的成員。這種內質網膜蛋白催化前列腺素H2轉化為前列腺素I2，一種有效的血管擴張劑和血小板聚集抑制劑前列環素及其生理拮抗劑血栓素a2的失衡有助于心肌梗死、中風和動脈粥樣硬化的發生。
This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. However, this protein is considered a member of the cytochrome P450 superfamily on the basis of sequence similarity rather than functional similarity. This endoplasmic reticulum membrane protein catalyzes the conversion of prostglandin H2 to prostacyclin (prostaglandin I2), a potent vasodilator and inhibitor of platelet aggregation. An imbalance of prostacyclin and its physiological antagonist thromboxane A2 contribute to the development of myocardial infarction, stroke, and atherosclerosis.