PLANH1, is a secreted protein which belongs to the serpin family. SERPINE1 acts as 'bait' for tissue plasminogen activator, urokinase, and protein C. Its rapid interaction with TPA may function as a major control point in the regulation of fibrinolysis. Defects in SERPINE1 are the cause of plasminogen activator inhibitor-1 deficiency (PAI-1 deficiency) which is characterized by abnormal bleeding due to SERPINE1 defect in the plasma. High concentrations of SERPINE1 have been associated with thrombophilia which is an autosomal dominant disorder in which affected individuals are prone to develop serious spontaneous thrombosis.
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人源细胞表达的重组小鼠颗粒蛋白前体蛋白产品，又称Proepithelin; PEPI; PC Cell-derived Growth Factor.其对应NCBI基因号为10090，对应Accession号为P28798.
