title: A different look for AB5 toxins.
abstract: Metzincins are a distinct clan of metallopeptidases encompassing several families. In this issue of Structure, Ng and colleagues describe the results of the structural analysis of the toxilysins, a novel family of metzincins employed by gastroinfective bacteria as intracellular virulence factors following host cell invasion.
authors.affiliation: Proteolysis Laboratory, Molecular Biology Institute of Barcelona CSIC, Barcelona Science Park, Helix Building, c/Baldiri Reixac 15-21, 08028 Barcelona, Spain. Electronic address: fxgr@ibmb.csic.es.
authors.forename: F Xavier
authors.initials: FX
authors.lastname: Gomis-Rüth
mesh_terms: D000818:Animals; D004926:Escherichia coli; D029968:Escherichia coli Proteins / Q000737:chemistry*; D045726:Metalloproteases / Q000737:chemistry*
chemical_list: D029968:Escherichia coli Proteins; C000588981:EcxA proetin, E coli; C000588982:EcxB protein, E coli; D045726:Metalloproteases