title: Analysis of the topology of a membrane protein by using a minimum number of alkaline phosphatase fusions.
abstract: An approach to analyzing the topology of membrane proteins with alkaline phosphatase fusions is described. Precise fusions were constructed by using polymerase chain reaction at the C terminus of each hydrophilic region of the membrane protein. The disruption of topogenic signals is thereby minimized, and predictable anomalous results are avoided. The Escherichia coli MalG protein has been analyzed.
authors.affiliation: Department of Microbiology and Molecular Genetics, Harvard Medical School, Boston, Massachusetts 02115.
authors.forename: D
authors.initials: D
authors.lastname: Boyd
authors.forename: B
authors.initials: B
authors.lastname: Traxler
authors.forename: J
authors.initials: J
authors.lastname: Beckwith
mesh_terms: D018528:ATP-Binding Cassette Transporters; D000469:Alkaline Phosphatase / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000737:chemistry* / Q000235:genetics; D001483:Base Sequence; D002352:Carrier Proteins / Q000737:chemistry* / Q000235:genetics; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism; D029968:Escherichia coli Proteins; D008565:Membrane Proteins / Q000737:chemistry* / Q000235:genetics*; D008969:Molecular Sequence Data; D016297:Mutagenesis, Site-Directed; D016133:Polymerase Chain Reaction / Q000379:methods; D011487:Protein Conformation; D017433:Protein Structure, Secondary; D011993:Recombinant Fusion Proteins / Q000737:chemistry* / Q000378:metabolism
chemical_list: D018528:ATP-Binding Cassette Transporters; D001426:Bacterial Proteins; D002352:Carrier Proteins; D029968:Escherichia coli Proteins; C079123:MalG protein, E coli; D008565:Membrane Proteins; D011993:Recombinant Fusion Proteins; D000469:Alkaline Phosphatase