PAPP-A Antibody / Pappalysin-1

Pappalysin-1, also known as DIPLA1, is a protein that in humans is encoded by the PAPPA gene. PAPP-A is found in the ovarian follicles, follicular fluid, luteal cells, and fallopian tubes of nonpregnant women and in the seminal vesicles and seminal fluid of males. This gene encodes a secreted metalloproteinase which cleaves insulin-like growth factor binding proteins (IGFBPs) . It is thought to be involved in local proliferative processes such as wound healing and bone remodeling. Low plasma level of this protein has been suggested as a biochemical marker for pregnancies with aneuploid fetuses. It has been found that circulating PAPP-A is a disulfide-bridged complex with proMBP in which the subunits of the constituents are present in a 1:1 molar ratio.