Lysosomal protective protein/cathepsin A (PPCA) is a lysosomal serine carboxypeptidase that forms an intralysosomal enzyme-complex with b-galactosidase and neuraminidase (NEU1). PPCA is synthesized as a 54-kDa precursor/zymogen, and proteolytically cleaved in the lysosome into a catalytically active 32- and 20-kDa two-chain enzyme. The enzyme has cathepsin A activity at acidic pH but maintains also a deamidase/esterase activity at neutral pH. Furthermore, the human enzyme, purified from platelets and lymphocytes, has been shown to function on the inactivation of selected neuropeptides, like substance P, oxytocin, and endothelin I. The autosomal recessive genetic deficiency of PPCA causes galactosialidosis, a neurodegenerative lysosomal storage disorder, resulting in the secondary deficiencies of b-galactosidase and NEU1.
應(yīng)用類型
ELISA,Immunohistochemistry,Western Blot,
免疫原
This whole rabbit serum was prepared by repeated immunizations with native 54-kDa human Protective Protein/Cathepsin A (PPCA) precursor, purified from the medium of baculovirus infected insect cells.
來源宿主
Rabbit
反應(yīng)性
H. sapiens (Human)
保存建議
Store vial at -20° C prior to opening. Aliquot contents and freeze at -20° C or below for extended storage. Avoid cycles of freezing and thawing. Centrifuge product if not completely clear after standing at room temperature. This product is stable for several weeks at 4° C as an undiluted liquid. Dilute only prior to immediate use.