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PubMed1994

Isolation and partial characterization of the major protein of the outer membrane of Pasteurella haemolytica and Pasteurella multocida.

The N-terminal amino acid sequence of the 35 kDa (p35) major outer membrane protein (MOMP) of P. multocida shared a strong homology with those of homotrimeric nonspecific porins of gram-negative bacteria. The capacity of outer membrane protein (OMP) preparations of P. multocida to bind to respiratory mucosal surface preparations was inhibited significantly by using a polyclonal anti-p35 antiserum in an adhesion ELISA. Anti-p35 antiserum cross-reacted with a 44 kDa (p44) MOMP of P. haemolytica. N-terminal sequencing of MOMP p44 revealed a homology of 81% with the putative porin MOMP p35 of P. multocida.

Amino Acid Sequence↗
PubMed1997

Further studies of the relationships among strains classified as taxon 15, taxon 18, taxon 20, (Pasteurella) granulomatis or the (Pasteurella) haemolytica-complex in ruminants using quantitative evaluation of phenotypic data.

Ninety-three trehalose-negative (P.) haemolytica-like strains of ruminant, porcine and leprine origin were investigated. A quantitative evaluation of phenotypic tests was used and the results obtained were compared with those from 246 previously investigated ruminant strains. Cluster analysis of the results obtained displayed most of the taxa as distinct groups which could be related to differences in key characters. Although only minor phenotypic differences were observed between the taxa investigated and the taxa were internally heterogeneous for many of the tests, it was possible to identify characters separating most groups. However, in three instances, taxa isolated from different species could not be separated by any of the tests used or by quantitative evaluation of all 79 tests--the only difference being the species of animals from which they had been isolated. Taxa which could not be separated by phenotypic tests included the ruminant biogroup 6 of (P.) haemolytica and the porcine taxon 15/biovar 1, the ruminant biogroup 7 of (P.) haemolytica and the porcine taxon 15/biovar 2, and ruminant biogroup 31 of (P.) haemolytica and the leprine taxon 20/biovar 1.

Animals↗