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Infection and Immunity, March 2001, p. 1917-1921, Vol. 69, No. 3
Respiratory Diseases of Livestock Research
Unit, National Animal Disease Center, USDA, Agricultural Research
Service, Ames, Iowa 50010
Received 28 August 2000/Returned for modification 10 October
2000/Accepted 24 November 2000
The Bordetella bronchiseptica outer membrane protein
pertactin is believed to function as an adhesin and is an important
protective immunogen. Previous sequence analysis of the pertactin gene
identified two regions predicted to encode amino acid repeat motifs.
Recent studies have documented DNA sequence heterogeneity in both
regions. The present study describes additional variants in these
regions, which form the basis for six novel pertactin types.
Immunoblotting demonstrated phenotypic heterogeneity in pertactin
consistent with the predicted combined sizes of the repeat regions. A
revised system for classifying B. bronchiseptica pertactin
variants is proposed.
0019-9567/01/$04.00+0 DOI: 10.1128/IAI.69.3.1917-1921.2001
Novel Genetic and Phenotypic Heterogeneity in
Bordetella bronchiseptica Pertactin
*
Mailing address: Swine Respiratory Diseases Project,
USDA/ARS/National Animal Disease Center, P.O. Box 70, 2300 Dayton Rd., Ames, IA 50010. Phone: (515) 663-7700. Fax: (515) 663-7458. E-mail: kregiste{at}nadc.ars.usda.gov.
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