3.4.21.7	S-2251 + H2O	-	Homo sapiens	?	-	?	365832	
3.4.21.7	S-sulfo-fibrinogen + H2O	cleaves only Lys and Arg peptide bonds	Homo sapiens	?	-	?	74446	
3.4.21.7	Spectrozyme PL + H2O	i.e. L-norleucyl-L-hexahydrotyrosyl-L-lysine-4-nitroanilide	Homo sapiens	L-norleucyl-L-hexahydrotyrosyl-L-lysine + 4-nitroaniline	-	?	450637	
3.4.21.7	SPGRVV + H2O	-	Homo sapiens	SPGR + Val-Val	-	?	365828	
3.4.21.7	STAT3	phosphorylates on Tyr705 and Ser727. Triggeres activation and nuclear translocation of STAT3	Homo sapiens	?	-	?	398338	
3.4.21.7	Suc-Ala-Phe-Lys-7-amido-4-methylcoumarin + H2O	-	synthetic construct	?	-	?	398347	
3.4.21.7	thrombin-activatable fibrinolysis inhibitor + H2O	mutant variants with variants in the amino acids surrounding the scissile R92-A93 bond such as P91S, R92K, and S90P exhibit specific impairment of activation by plasmin	Homo sapiens	?	-	?	365556	
3.4.21.7	tissue factor pathway inhibitor + H2O	plasmin increases tissue factor activity by inactivating the cell-associated tissue factor pathway inhibitor by a limited proteolysis	Homo sapiens	?	-	?	367349	
3.4.21.7	Tosyl-Arg methyl ester + H2O	-	Oryctolagus cuniculus	?	-	?	15377	
3.4.21.7	Tosyl-Arg methyl ester + H2O	p-tosyl-Arg methyl ester	Homo sapiens	?	-	?	15377