title: The quorum-sensing hybrid histidine kinase LuxN of Vibrio harveyi contains a periplasmically located N terminus.
abstract: Hydropathy profile analyses of the amino acid sequence of the quorum-sensing hybrid histidine kinase LuxN of Vibrio harveyi predict a periplasmic location of the N terminus. To test this, two-hybrid proteins consisting of LuxN and an N-terminally fused maltose-binding protein with or without a leader sequence were analyzed with regard to the enzymatic activities of LuxN, protease accessibility, and complementation of an Escherichia coli malE mutant. The results strongly support a periplasmic location of the N terminus, implying that LuxN is anchored with nine transmembrane domains in the cytoplasmic membrane.
authors.affiliation: Ludwig-Maximilians-Universität, Department Biologie I, Bereich Mikrobiologie, Maria-Ward-Str. 1a, D-80638 München, Germany. kirsten.jung@lrz.uni-muenchen.de
authors.forename: Kirsten
authors.initials: K
authors.lastname: Jung
authors.forename: Tina
authors.initials: T
authors.lastname: Odenbach
authors.forename: Melanie
authors.initials: M
authors.lastname: Timmen
mesh_terms: D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D000071677:Histidine Kinase; D008958:Models, Molecular; D008969:Molecular Sequence Data; D011487:Protein Conformation; D011494:Protein Kinases / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D053038:Quorum Sensing / Q000502:physiology*; D011994:Recombinant Proteins / Q000737:chemistry / Q000378:metabolism; D014157:Transcription Factors / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D014733:Vibrio / Q000201:enzymology*
chemical_list: D001426:Bacterial Proteins; D011994:Recombinant Proteins; D014157:Transcription Factors; D011494:Protein Kinases; C084290:luxN protein, Vibrio harveyi; D000071677:Histidine Kinase