The production of streptocins STH1 and STH2 by Streptococcus gordonii DL1 (Challis) is
directly controlled by the competence regulon, which requires intact comR and comAB loci …

In Streptococcus mutans, competence for genetic transformation and biofilm formation are
dependent on the two-component signal transduction system ComDE together with the …

Horizontal gene transfer is an important means of bacterial evolution that is facilitated by
transduction, conjugation, and natural genetic transformation. Transformation occurs after …

Streptococcus gordonii Wicky becomes competent only after stimulation with conditioned
medium from strain Challis as a source of competence factor (CF). A 3.2-kbp genomic …

To map the incidence of natural competence in the genus Streptococcus, we used PCR to
screen a number of streptococcal strains for the presence of the recently identified …

Many streptococcal species belonging to the mitis and anginosus phylogenetic groups are
known to be naturally competent for genetic transformation. Induction of the competent state …

A locus encoding proteins with high homology to the pneumococcal BlpABCHR quorum-
sensing system was identified in Streptococcus thermophilus LMG 18311. The BlpABCHR …

The Streptococcus mutans hdrRM operon encodes a novel two-gene regulatory system
induced by high cell density. Previous studies identified hdrM as the only known negative …

Competence for genetic transformation in certain species of streptococci has been known for
many years to be induced by a secreted protease‐sensitive pheromone, referred to as the …

In streptococcal species, the key step of competence development is the transcriptional
induction of comX, which encodes the alternative sigma factor σX, which positively regulates …