在哺乳动物的体内,如骨髓、红血球、肝脏、肾脏、心肌、脾脏、肺、子宫、大脑皮层等脏器、组织中,广泛地存在着一种物质——原卟啉。原卟啉的大部分以铁螯合性化合物血红素的形式与蛋白质相结合,成为运输氧气的血红蛋白,或者以一种将血红素作为活性簇的血红素酶的状态,如过氧化氢酶、过氧物酶、药物代谢酶等,在机体各种机能中发挥着重要作用。 In mammals, such as bone marrow, red blood cells, liver, kidney, myocardium, spleen, lung, uterus, cerebral cortex and other organs, tissues, there is a widespread substance - protoporphyrin. Most of the protoporphyrins bind to the protein in the form of an iron-chelating compound, heme, as oxygen-transporting hemoglobin, or in a state of heme enzyme that uses heme as an active cluster, such as catalase, Peroxidase, drug metabolism enzymes, play an important role in various functions of the body.