3.4.22.55	strict requirement for an Asp residue at P1, with Asp316 being essential for proteolytic activity and has a preferred cleavage sequence of Val-Asp-Val-Ala-Asp-/-	-	-	
3.4.22.55	strict requirement for an Asp residue at P1, with Asp316 being essential for proteolytic activity and has a preferred cleavage sequence of Val-Asp-Val-Ala-Asp-/-	catalysis is mediated by a mechanism involving a catalytic dyad composed of a cysteine residue as the catalytic nucleophile and a histidine residue	701085