Abstract
Vibrio cholerae causes the potentially lethal disease cholera through the elaboration of the intestinal secretogen cholera toxin. A second toxin of V. cholerae, Zot, decreases intestinal tissue resistance by modifying intercellular tight junctions. In this report, a third toxin of V. cholerae, Ace (accessory cholera enterotoxin), is described. Ace increases short-circuit current in Ussing chambers and causes fluid secretion in ligated rabbit ileal loops. The predicted protein sequence of Ace shows striking similarity to eukaryotic ion-transporting ATPases, including the product of the cystic fibrosis gene. The gene encoding Ace is located immediately upstream of the genes encoding Zot and cholera toxin. The ctx, zot, and ace genes, which are located on a dynamic sector of the chromosome, comprise a V. cholerae "virulence cassette."
MeSH Terms
Amino Acid Sequence
Animals
Base Sequence
Cholera Toxin/genetics,isolation & purification,toxicity
DNA Transposable Elements
Genes, Bacterial
Ileum/drug effects
Molecular Sequence Data
Muscle, Smooth/drug effects
Oligodeoxyribonucleotides
Plasmids
Polymerase Chain Reaction
Protein Structure, Secondary
Rabbits
Restriction Mapping
Sequence Homology, Amino Acid
Vibrio cholerae/genetics,pathogenicity
Virulence/genetics
Chemicals
Ace toxin
DNA Transposable Elements
Oligodeoxyribonucleotides
Cholera Toxin
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Trucksis M
Department of Medicine, University of Maryland School of Medicine, Baltimore.
Galen J E
Michalski J
Fasano A
Kaper J B
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