3.4.21.B1	glycoprotein	-	650492, 668344	
3.4.21.B1	glycoprotein	only N-terminal portion is glycosylated, 3.5% carbohydrate content represented by N-glucosamine, N-galactosamine, galactose, mannose, glucose and fucose	651102	
3.4.21.B1	proteolytic modification	autoactivation leads to the typical protease two-chain pattern and subsequent degradation products	651102	
3.4.21.B1	proteolytic modification	autocatalytic activation	650444