Abstract Progressive atrophic rhinitis is an important respiratory disease in swine industry, caused by toxigenic Pasteurella multocida. The OmpH of Pasteurella mumtocida is a major outer membrane protein involved in the pathogenesis and immunity. In this study the ompH gene of P. multocida strain HN-13 of swine origin was cloned, sequenced and highly expressed in E. coli, and an indirect enzyme-linked immunosorbent assay (ELISA) was established using the recombinant protein. The structure of the ompH gene and its protein was analyzed using bioinformatics methods, suggesting that the OmpH is a porin.
