Search for dissertations about: "σ54-transcription"

Found 2 swedish dissertations containing the word σ54-transcription.

  2. 1. On the role of ppGpp and DksA mediated control of σ54-dependent transcription

    Author : Lisandro Bernardo; Victoria Shingler; Victor de Lorenzo; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ppGpp; DksA; σ54-transcription; global regulation; E. coli; P. putida; Molecular biology; Molekylärbiologi;

    Abstract : The σ54-dependent Po promoter drives transcription of an operon that encodes a suite of enzymes for (methyl)phenols catabolism. Transcription from Po is controlled by the sensor-activator DmpR that binds (methyl)phenol effectors to take up its active form. READ MORE

  4. 2. On the role of small regulatory molecules in the interplay between σ54- and σ70-dependent transcription

    Author : Linda Holmfeldt; Victoria Shingler; Thomas Nyström; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; σ54; σ70; ppGpp; DksA; transcription regulation; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Abstract : Signal responsive transcriptional control in bacteria is mediated through both specific and global regulatory circuits to attune promoter output to prevailing conditions. Divergent transcription of a regulatory gene and a cognate promoter under its control provides an opportunity for interplay between transcription dependent on RNA polymerases utilizing various σ-factors, each of which programs the holoenzyme to recognize different classes of promoters. READ MORE