. "A single aspartic residue is critical for activity, and inhibition by EDTA indicates that a metal ion is also important." . "The enzyme is known from several nodaviruses that are pathogens of insects." . "Belongs to peptidase family A6." . . . "Nodavirus endopeptidase" . "Black Beetle virus endopeptidase" . "Flock House virus endopeptidase" . "Hydrolysis of an asparaginyl bond involved in the maturation of the structural protein of the virus, typically -Asn-|-Ala- or -Asn-|-Phe-." .