3.4.21.9	proteolytic modification	secreted as a proenzyme, enterokinase converts trypsinogen to trypsin	95580	
3.4.21.9	proteolytic modification	the zymogen proenteropeptidase is activated by trypsin	95578	
3.4.21.9	side-chain modification	-	95565	
3.4.21.9	side-chain modification	35% carbohydrate	95570	
3.4.21.9	side-chain modification	contains 20% neutral sugar, 20% amino sugars, 15% sialic acids	95574	
3.4.21.9	side-chain modification	contains 47% neutral sugar and 10% amino sugar	95573	
3.4.21.9	side-chain modification	contains more than 57% carbohydrate per weight	95565	
3.4.21.9	side-chain modification	glycoprotein	95579, 95580	
3.4.21.9	side-chain modification	glycoprotein contains 1.01% hexosamine, 2.17% hexose, 0.36% sialic acid and 0.53% fucose	95581	
3.4.21.9	side-chain modification	glycosylated mainly with N-linked carbohydrate chains of the triantennary and tetraantennary complex type	95565, 95573, 95574, 95584