The SHV-1 beta-lactamase is most commonly found in K. pneumoniae and is responsible for up to 20% of the plasmid-mediated ampicillin resistance in this species.
A beta-lactamase SHV-1 encóntrase principalmente en K. pneumoniae e é responsable dun 20% da resistencia á meticilina mediada por plásmidos nesta especie.