3.4.21.41	acetyl-Arg methyl ester + H2O	-	Homo sapiens	acetyl-Arg + methanol	-	?	65161	
3.4.21.41	acetyl-Gly-Lys-methyl ester + H2O	-	Homo sapiens	?	-	?	365421	
3.4.21.41	benzyloxycarbonyl-Gly-Arg-thiobenzyl ester + H2O	-	Homo sapiens	?	-	?	365417	
3.4.21.41	benzyloxycarbonyl-Lys-thiobenzyl ester + H2O	-	Homo sapiens	benzyloxycarbonyl-Lys + phenylmethanethiol	-	?	15670	
3.4.21.41	chordin + H2O	C-terminal domains CUB1 and CUB2 are required for the ventralizing activity of Xld and for its ability to cleave chordin	Xenopus laevis	?	-	?	384449	
3.4.21.41	complement C1q zymogen + H2O	-	Homo sapiens	active complement C1q + ?	-	?	430932	
3.4.21.41	complement C1q zymogen + H2O	no or reduced activity with substrate mutants K59A, K61A, K58A, and K58A/K59A/K61A	Homo sapiens	active complement C1q + ?	-	?	430932	
3.4.21.41	complement component C1s	-	Homo sapiens	?	-	?	369674	
3.4.21.41	complement component C1s	binding of C1 to activator is mediated by C1q and triggers activation of proenzyme C1r into an active protease C1rbar, which in turn activates C1s, thereby initiating the classical pathway of complement	Homo sapiens	?	-	?	369674	
3.4.21.41	complement component C1s	regulation of the synthesis	Homo sapiens	?	-	?	369674