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Comparative Study
. 1993 Apr 1;90(7):2970-4.
doi: 10.1073/pnas.90.7.2970.

Molecular characterization of an operon required for pertussis toxin secretion

A A Weiss  1 , F D Johnson, D L Burns
Affiliations
Comparative Study

Molecular characterization of an operon required for pertussis toxin secretion

A A Weiss et al. Proc Natl Acad Sci U S A. .

Abstract

Mutants of Bordetella pertussis which are defective in secretion of pertussis toxin were isolated and characterized. The region of the B. pertussis chromosome identified by mutagenesis as playing a role in transport of pertussis toxin was sequenced. Analysis of this region revealed eight open reading frames, seven of which predict a protein exhibiting homology with one of the VirB proteins of Agrobacterium tumefaciens, which are involved in the transport of the T-DNA molecule across bacterial and plant membranes. Thus a set of accessory proteins are most likely involved in the secretion of pertussis toxin, and these proteins appear to be members of a family of proteins involved in the secretion of macromolecules from bacteria.

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