3.4.21.46 no modification no potential N-glycosylation site, no carbohydrate is present in the purified protein 36592 3.4.21.46 proteolytic modification cleavage site for the signal sequence of PoDAK is predicted between Gys24 and Ile25 708533 3.4.21.46 proteolytic modification complement factor D is a zymgen with the activation peptide QPRGR at its N-terminus. Mannose-binding lectin-associated serine protease-1 and -3 (Masp 1/3) deficient mice fail convert pro-complement factor D in its active form. Mannose-binding lectin-associated serine protease-1 converts pro-complement factor D in vitro indicating that mannose-binding lectin-associated serine protease-1 (MASP-1) is an essential protease for activating complement factor D 709321 3.4.21.46 proteolytic modification profactor D 36585