Streptococcus thermophilus strain ST109 Genome sequencing and assembly
Streptococcus thermophilus
Streptococcus thermophilus ST109 is a Gram-positive, thermophilic yogurt culture that has been reported to produce a broad-spectrum bacteriocin encoded within the chromosomal bacteriocin-like peptide (blp) gene cluster. Several strains of S. thermophilus require induction with a synthetic quorum sensing peptide for production of their blp-encoded bacteriocins; however, ST109 naturally expresses its antimicrobial peptide. The purpose of this study was to identify the molecular mechanisms, which regulate bacteriocin production to understand why expression form the blp gene cluster varies between strains. This may identify targets for genetic modification to allow other strains to naturally produce their bacteriocin, thus increasing their potential as bioprotective cultures.
strain
ST109
isolation_source
raw milk
collection_date
unknown
geo_loc_name
USA:ERRC at Wyndmoor, PA
sample_type
whole organism
biomaterial_provider
John A. Renye, Jr.
collected_by
USDA:ERRC
BioSampleModel
Microbe, viral or environmental