Leukotoxin gene from Pasteurella suis

摘要

The present invention discloses a new species of gram-negative bacterium, designated "Pasteurella suis," isolated from piglets with diarrhea, a gene or gene fragment encoding a novel leukotoxin secreted from Pasteurella suis, recombinant DNA sequences and expression systems for directing expression of the gene, a method of using the gene or gene fragment as an immunogen in vaccine formulations and as reagents in diagnostic assays.