3.4.21.78	Hydrolysis of proteins, including fibronectin, type IV collagen and nucleolin. Preferential cleavage: -Arg-/-, -Lys-/- >> -Phe-/- in small molecule substrates	including fibronectin, type IV collagen and nucleolin. Preferential cleavage:-Arg-+-,-Lys-+- >>-Phe-+- in small molecule substrates, he term-+- depicts the point of cleavage	-