title: Effect of histamine on the signal transduction of the AtoS-AtoC two component system and involvement in poly-(R)-3-hydroxybutyrate biosynthesis in Escherichia coli.
abstract: AtoS-AtoC two-component system acts directly on the atoDAEB operon transcription to regulate the biosynthesis of short-chain poly-(R)-3-hydroxybutyrate. This study sought to investigate the effect of histamine and compound 48/80 on the regulation of AtoS-AtoC two-component system in Escherichia coli K-12 MA255 (speC(-), speB(-)) and the isogenic E. coli strains BW25113 (atoSC(+)) and BW28878 (DeltaatoSC) transformed with plasmids carrying related genes. Histamine or compound 48/80 induced or tended to reduce atoC transcription, respectively, while neither compound showed any effect on atoDAEB operon transcription. Moreover, histamine down-regulated poly-(R)-3-hydroxybutyrate biosynthesis, whereas compound 48/80 up-regulated its biosynthesis, maximal induction being obtained in the presence of multiple copies of AtoS-AtoC. Interestingly, co-administration of histamine counteracted this inductive effect of compound 48/80. The reported data provide the first evidence for a differential modulator role of histamine and compound 48/80 on the AtoS-AtoC two-component system signaling in potentially pathogenic bacteria, leading to a new perspective on their symbiotic behavior.
authors.affiliation: Laboratory of Biochemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.
authors.forename: D A
authors.initials: DA
authors.lastname: Kyriakidis
authors.forename: M C
authors.initials: MC
authors.lastname: Theodorou
authors.forename: P S
authors.initials: PS
authors.lastname: Filippou
authors.forename: K D
authors.initials: KD
authors.lastname: Kyriakidis
authors.forename: E
authors.initials: E
authors.lastname: Tiligada
mesh_terms: D004268:DNA-Binding Proteins / Q000096:biosynthesis* / Q000235:genetics; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism*; D029968:Escherichia coli Proteins / Q000096:biosynthesis* / Q000235:genetics; D017353:Gene Deletion; D015964:Gene Expression Regulation, Bacterial / Q000187:drug effects / Q000502:physiology; D006632:Histamine / Q000494:pharmacology*; D017442:Histamine Agonists / Q000494:pharmacology*; D006885:Hydroxybutyrates / Q000378:metabolism*; D009876:Operon / Q000502:physiology; D011091:Polyesters / Q000378:metabolism*; D011494:Protein Kinases / Q000096:biosynthesis* / Q000235:genetics; D015398:Signal Transduction / Q000187:drug effects* / Q000502:physiology; D014158:Transcription, Genetic / Q000187:drug effects / Q000502:physiology; D015854:Up-Regulation / Q000187:drug effects / Q000502:physiology; D003189:p-Methoxy-N-methylphenethylamine / Q000494:pharmacology; D000094122:Polyhydroxybutyrates
chemical_list: D004268:DNA-Binding Proteins; D029968:Escherichia coli Proteins; D006632:Histamine; D017442:Histamine Agonists; D006885:Hydroxybutyrates; D011091:Polyesters; D011494:Protein Kinases; D003189:p-Methoxy-N-methylphenethylamine; C505587:AtoC protein, E coli; C003182:poly-beta-hydroxybutyrate; D000094122:Polyhydroxybutyrates; C505586:AtoS protein, E coli