3.4.21.41	additional information	-	additional information	activated C1r and its wild-type CCP1/2-SP and CCP2-SP fragments all cleave acetyl-Gly-Lys-methyl ester with turnover numbers ranging from 8.2 s to 9.2 s	652176	
3.4.21.41	0.0021	-	MASP-3 K448Q zymogen	pH 7.4, 37°C	732102	
3.4.21.41	0.0645	-	zymogen C1s	pH 7.4, 37°C, substrate is a fragment consisting of complement control protein domains, CCP1 and CCP2, plus serine	732102	
3.4.21.41	12.5	-	N-Acetyl-Gly-Lys methyl ester	-	81392	
3.4.21.41	18.3	-	N-acetyl-Arg methyl ester	-	81392