Gingipain K (EC 3.4.22.47, Lys-gingipain, PrtP proteinase) is an enzyme. This enzyme catalyses the following chemical reaction Gingipain K (EC 3.4.22.47, Lys-gingipain, PrtP proteinase) is an enzyme. This enzyme catalyses the following chemical reaction Activity of this enzyme is stimulated by glycine.