Corpus ID: 32138217

Regulation of the beta-glucoside system in Escherchia coli K-12.

@article{Prasad1974RegulationOT,
  title={Regulation of the beta-glucoside system in Escherchia coli K-12.},
  author={I. Prasad and S. Schaefler},
  journal={Journal of bacteriology},
  year={1974},
  volume={120 2},
  pages={
          638-50
        }
}
In Escherichia coli wild-type cells, a mutation at the beta-glucoside regulatory gene (bglR(+) to bglR(-)) leads to simultaneous expression of inducible phospho-beta-glucosidase B (bglB(+)) and a beta-glucoside-specific species of enzyme II (beta-glucoside transport I [bglC(+)]); an additional mutation (bglS(+) to bglS4) allows these enzymes to be formed constitutively. The bgl alleles have been mapped in the following order: pyrE, bglA, bglB, bglS, bglR, bglC, ilvD. The back mutation in the… Expand
The β-Glucoside (bgl) Operon of Escherichia coli Is Involved in the Regulation of oppA, Encoding an Oligopeptide Transporter
TLDR
The bgl operon of Escherichia coli, encoding the functions necessary for the uptake and metabolism of aryl-β-glucosides, is involved in the regulation of oligopeptide transport during stationary phase and is mediated via gcvA, the activator of the glycine cleavage system, and gcvB, which regulates oppA at the posttranscriptional level. Expand
Diverse pathways for salicin utilization in Shigella sonnei and Escherichia coli carrying an impaired bgl operon
TLDR
The pathway to achieve salicin utilization is diverse in Shigella sonnei and E. coli strain tree; however, both show cooperation between two silent genetic systems to achieve a new metabolic capability under selection. Expand
In Vivo Expression of the β-Glucoside (bgl) Operon of Escherichia coli Occurs in Mouse Liver
TLDR
It is demonstrated that expression of the bgl operon occurs in infected mouse liver and suggests a unique role for this operon in vivo. Expand
Evolution of Aromatic β-Glucoside Utilization by Successive Mutational Steps in Escherichia coli
TLDR
The sequential accumulation of mutations in bglA can confer the ability to hydrolyze the related aromatic β-glucosides esculin and salicin in two steps, underscore the ability of microorganisms to evolve additional metabolic capabilities by mutational modification of preexisting genetic systems under selection pressure, thereby expanding their repertoire of utilizable substrates. Expand
Analysis of the interaction of the LuxR-type transcription factors BglJ and RcsB and antagonism of H-NS mediated silencing in Escherichia coli
TLDR
Data from Co-immunoprecipitation studies support the model that RcsB forms a heterodimer with BglJ, that the RCSB-BglJ heterodender antagonizes H-NS in bgl, and that it Rcs B-B glJ plays an important role in global gene regulation. Expand
Genome variations in commensal and pathogenic E.coli
TLDR
A systematic analysis of DNA polymorphisms at the region of bgl/Z5211-Z5214 island encoded systems demonstrated the genetic diversity among the E.coli strains and demonstrated that the sequence variations seen at the bgl promoter region in the CFT073 b gl/Z type strains does not significantly influence the b gl expression in E. coli isolates. Expand
Cell cycle progression in Caulobacter requires a nucleoid-associated protein with high AT sequence recognition
TLDR
It is shown that GapR only associates with DNA sequences of high adenine and thymine (AT) content, colocating with cell cycle master regulators that control genes mediating swarmer cell development, and proposed that Caulobacter has co-opted a nucleoid-associated protein with high AT recognition to serve as a mediator of cell cycle progression. Expand
Deconstructing the structural conservation of distantly related bacterial nucleoid-associated proteins using functional chimeras
TLDR
This work has identified a sequence element unique to GapR that enables assembly into its tetrameric state and showed that GapR is capable of bridging DNA molecules in vitro. Expand
The Nucleoid-Associated Protein GapR Uses Conserved Structural Elements To Oligomerize and Bind DNA
TLDR
The structural elements involved in oligomerization and DNA binding of a newly discovered NAP in Caulobacter crescentus are identified and the demonstration that structural elements are conserved in evolutionarily distant and functionally distinct NAPs is demonstrated. Expand
Protein targeting via mRNA in bacteria.
TLDR
Although the underlying mechanisms for transcript localization in bacteria are yet to be unraveled, it is now obvious that intracellular localization of mRNA is a common mechanism to spatially localize proteins in both eukaryotes and prokaryotes. Expand