title: Membrane topology of the methyl-accepting chemotaxis protein DcrA from Desulfovibrio vulgaris Hildenborough.
abstract: Alkaline phosphatase fusions were used to study the membrane topology of DcrA, a protein of 668 amino acids from Desulfovibrio vulgaris Hildenborough, which has two potentially membrane-spanning hydrophobic sequences at residues 11 to 29 and 188 to 207. A fusion at amino acid residue 170 in the proposed periplasmic domain exhibited high alkaline phosphatase activity, while low activity was observed for a fusion at amino acid residue 284 in the proposed cytoplasmic domain. The data support a topological model for DcrA similar to that of the methyl-accepting chemotaxis proteins of the enteric bacteria.
authors.affiliation: Department of Biological Sciences, University of Calgary, Alberta, Canada.
authors.forename: H M
authors.initials: HM
authors.lastname: Deckers
authors.forename: G
authors.initials: G
authors.lastname: Voordouw
mesh_terms: D002633:Chemotaxis; D003001:Cloning, Molecular; D016969:Desulfovibrio vulgaris / Q000737:chemistry*; D004926:Escherichia coli; D008565:Membrane Proteins / Q000032:analysis
chemical_list: D008565:Membrane Proteins