PAPP-A Native

Pappalysin-1, Pregnancy-associated plasma protein A, PAPP-A, IGF-dependent IGFBP-4 protease, IGFBP-4ase, PAPPA, PAPA, DIPLA1, PAPPA1, ASBABP2.

PAPPA is a large zinc binding protein, which plays a role as a metalloprotease and specifically cleaves IGFBP-4 and IGFBP-5, resulting in release of bound IGF. PAPP-A regulates IGF bioactivity in various biological systems, including the human ovary and cardiovascular systems. PAPP A levels were higher in patients with unstable angina or acute myocardial infarction. PAPPA is also involved in local proliferative processes such as wound healing and bone remodeling. Moreover, PAPP-A is produced in high concentrations during pregnancy and is released into the maternal circulation. In placenta, PAPP A is expressed in X cells in septa and anchoring villi, and in syncytiotrophoblasts in the chorionic villi.

PAPP-A Human native purified from human placenta having a total molecular mass of ~200 kDa.

The PAPP-A is purified by proprietary chromatographic techniques.

Human Placenta

Brownish lyophilized (freeze-dried) powder.

PAPP-A protein was lyophilized from 10mM Tris-HCl pH-7, 0.15M NaCl, 0.1% NGME & 0.09% NaN3.

Lyophilized PAPP-A although stable at room temperature for 3 weeks, should be stored desiccated below -18C. Upon reconstitution PAPP-A should be stored at 4C between 2-7 days and for future use below -18C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).

Please prevent freeze-thaw cycles.

It is recommended to add deionized water to a working concentration of 0.1mg/ml and let the lyophilized pellet dissolve completely.

Starting material tested and found negative for HIV-I, HIV-II, HCV antibodies and HBsAg antigen.  

SDS