Table 1.

Chemical structures and K _i values of the used 3-amidinophenylalanine-derived inhibitors towards matriptase-1 (MT-1), matriptase-2 (MT-2), and thrombin.

Number	Structure	K i (µM)
		MT-1	MT-2	Thrombin
MI-432		0.002	0.11	0.02
MI-441		0.011	0.21	0.02
MI-460		0.0018	0.18	0.0008
MI-461		0.0009	0.073	0.0002