title: Masked proteolytic activity localized in the outer membrane of Escherichia coli.
mesh_terms: D002462:Cell Membrane / Q000201:enzymology*; D010450:Endopeptidases / Q000302:isolation & purification / Q000378:metabolism*; D004926:Escherichia coli / Q000201:enzymology*; D046911:Macromolecular Substances; D008970:Molecular Weight
chemical_list: D046911:Macromolecular Substances; D010450:Endopeptidases