Table 1.

	hinge							Variable												target proteases
position human	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	1′	2′	3′	4′
SerpinB3	G	A	E	A	A	A	A	T	A	V	V	G	F	G	S	S	P	T	S	Papain, Cathepsin L, S, K
SerpinB4	*	V	*	*	*	*	*	*	*	*	*	V	V	E	L	*	S	P	*	Chymase, Cathepsin G, Der P, Granzyme M
Mouse
serpinb3a	G	T	E	A	A	A	A	T	G	V	E	V	S	L	T	S	A	Q	I	Cathepsin K, L, S, V, G, papain, Der P, HMC
serpinb3b	*	*	*	*	*	*	*	*	*	*	*	*	*	V	R	*	*	*	*	Cathepsin L, G