. "Shows a preference for cleavage between consecutive basic amino acids, but is capable of cleavage when P1' is a non-basic residue." . "Belongs to peptidase family A26." . . . "Omptin" . "Protease A" . "Outer membrane protein 3B" . "Protease VII" . . "Has a virtual requirement for Arg in the P1 position and a slightly less stringent preference for this residue in the P1' position, which can also contain Lys, Gly or Val." .