title: Natural isolates of Salmonella enterica serovar Dublin carry a single nadA missense mutation.
abstract: Nicotinic acid is required by most isolates of Salmonella enterica (serovar Dublin), a pathogen of cattle. A single nadA missense mutation causes the nutritional requirement of all serovar Dublin isolates tested. Models for persistence of this allele are tested and discussed.
authors.affiliation: Department of Biology, University of Utah, Salt Lake City, Utah, USA.
authors.forename: Ulfar
authors.initials: U
authors.lastname: Bergthorsson
authors.forename: John R
authors.initials: JR
authors.lastname: Roth
mesh_terms: D024881:Drug Resistance, Bacterial; D020125:Mutation, Missense; D009243:NAD / Q000096:biosynthesis*; D019779:Salmonella enterica / Q000235:genetics / Q000378:metabolism*
chemical_list: D009243:NAD