title: Spacing mutations between the Escherichia coli pBAD RNA polymerase binding site and the araC (I) induction site.
abstract: Mutations in the Escherichia coli promoter PBAD have been constructed which alter the spacing of the adjacent RNA polymerase and araC inducer protein binding sites. While deletion of a single base-pair or small insertions do not detectably affect araC protein binding to DNA and they do not alter the conserved sequence of the RNA polymerase binding site, stimulation of PBAD in vivo is greatly reduced. The experiments suggest that the distance or angle between the two proteins on the DNA is critical for promoter function.
mesh_terms: D051777:AraC Transcription Factor; D001426:Bacterial Proteins; D001483:Base Sequence; D004262:DNA Restriction Enzymes; D004269:DNA, Bacterial / Q000235:genetics; D012321:DNA-Directed RNA Polymerases / Q000235:genetics*; D004926:Escherichia coli / Q000235:genetics*; D029968:Escherichia coli Proteins; D005796:Genes; D005798:Genes, Bacterial; D009154:Mutation; D009876:Operon; D010957:Plasmids; D012097:Repressor Proteins / Q000235:genetics*; D014157:Transcription Factors / Q000235:genetics*
chemical_list: D051777:AraC Transcription Factor; C497371:AraC protein, E coli; D001426:Bacterial Proteins; D004269:DNA, Bacterial; D029968:Escherichia coli Proteins; D012097:Repressor Proteins; D014157:Transcription Factors; D012321:DNA-Directed RNA Polymerases; D004262:DNA Restriction Enzymes