Journal : Diseases of Aquatic Organisms , vol. 61 , p. 257–262 , 2004
International Standard Numbers
Printed : 0177-5103
Electronic : 1616-1580
Publication type : Academic article
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The virulence array protein gene A (vapA) encoding the A-protein subunit of the surface layer of 23 typical and atypical strains of Aeromonas salmonicida from salmonids and marine fish species were sequenced, and the deduced A-protein sequences compared. The A-proteins of the typical A. salmonicida ssp. salmonicida strains were shown to be identical, while amino acid variability was revealed among A-proteins of atypical strains. The highest amino acid variability appears to be in a predicted surface exposed region and is believed to result in antigenic differences among the atypical strains of A. salmonicida.