Unknown

Dataset Information

0

ComW?6 Stimulates Transcription of Pneumococcal Competence Genes in vitro.


ABSTRACT: The alternative streptococcal ?-factor and master competence regulator, ?X, stimulates transcription from competence promoters, in vitro. As the only known alternative ?-factor in streptococci, ?X expression is tightly controlled in each species and has a specific physiological role. Pneumococcal transformation also requires the DNA binding activity of ComW, a known ?X activator and stabilizer. Mutations to the housekeeping ? factor, ?A, partially alleviate the ComW requirement, suggesting that ComW is a key player in the ? factor swap during the pneumococcal competence response. However, there is no evidence of a direct ComW - RNA polymerase interaction. Furthermore, if and how ComW functions directly at combox promoters is still unknown. Here we report that a DNA-binding ComW variant, Com?6, can stimulate transcription from ?X promoters in vitro.

SUBMITTER: Inniss NL 

PROVIDER: S-EPMC7218084 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

altmetric image

Publications

ComWΔ6 Stimulates Transcription of Pneumococcal Competence Genes <i>in vitro</i>.

Inniss Nicole L NL   Morrison Donald A DA  

Frontiers in molecular biosciences 20200506


The alternative streptococcal σ-factor and master competence regulator, σ<sup>X</sup>, stimulates transcription from competence promoters, <i>in vitro.</i> As the only known alternative σ-factor in streptococci, σ<sup>X</sup> expression is tightly controlled in each species and has a specific physiological role. Pneumococcal transformation also requires the DNA binding activity of ComW, a known σ<sup>X</sup> activator and stabilizer. Mutations to the housekeeping σ factor, σ<sup>A</sup>, partial  ...[more]

Similar Datasets

| S-EPMC10259803 | biostudies-literature
| S-EPMC6560143 | biostudies-literature
| S-EPMC6451099 | biostudies-literature
| S-EPMC4927155 | biostudies-literature
| S-EPMC381665 | biostudies-other
| S-EPMC6181422 | biostudies-literature
| S-EPMC1426553 | biostudies-literature
| S-EPMC5700003 | biostudies-literature
| S-EPMC9558951 | biostudies-literature
| S-EPMC6177246 | biostudies-literature