beta-galactosidase 2,beta-galactosidase protective protein,carboxypeptidase C,Carboxypeptidase L,carboxypeptidase Y-like kininase,carboxypeptidase-L,Cathepsin A,deamidase,GLB2,GSL,lysosomal carboxypeptidase A,lysosomal protective protein,NGBE,PPCA,PPGB,protective protein cathepsin A,Protective protein for beta-galactosidase,urinary kininase.
Protective protein appears to be essential for both the activity of beta-galactosidase and neuraminidase, it associates with these enzymes and exerts a protective function necessary for their stability and activity. This protein is also a carboxypeptidase and can deamidate tachykinins.