Damage of Streptococcus mutans biofilms by carolacton, a secondary metabolite from the myxobacterium Sorangium cellulosum
نویسندگان
چکیده
منابع مشابه
Synthesis of new carolacton derivatives and their activity against biofilms of oral bacteria.
Carolacton, a secondary metabolite isolated from the extracts of Sorangium cellulosum, causes membrane damage and cell death in biofilms of the caries- and endocarditis-associated bacterium Streptococcus mutans. Here, we report the total synthesis of several derivatives of carolacton. All new structural modifications introduced abolished its biological activity, including subtle ones, such as i...
متن کاملUnusual outer membrane lipid composition of the gram-negative, lipopolysaccharide-lacking myxobacterium Sorangium cellulosum So ce56.
The gram-negative myxobacterium Sorangium cellulosum So ce56 bears the largest bacterial genome published so far, coding for nearly 10,000 genes. Careful analysis of this genome data revealed that part of the genes coding for the very well conserved biosynthesis of lipopolysaccharides (LPS) are missing in this microbe. Biochemical analysis gave no evidence for the presence of LPS in the membran...
متن کاملThe biofilm inhibitor Carolacton inhibits planktonic growth of virulent pneumococci via a conserved target
New antibacterial compounds, preferentially exploiting novel cellular targets, are urgently needed to fight the increasing resistance of pathogens against conventional antibiotics. Here we demonstrate that Carolacton, a myxobacterial secondary metabolite previously shown to damage Streptococcus mutans biofilms, inhibits planktonic growth of Streptococcus pneumoniae TIGR4 and multidrug-resistant...
متن کاملHolographic microrheology of polysaccharides from Streptococcus mutans biofilms
We use three-dimensional holographic particle tracking to perform microrheological measurements of model gelled media, including the polysaccharide pellicle of dental biofilms created by the common cariogenic oral pathogen Streptococcus mutans. Nanometerresolution video-rate holographic tracking of embedded colloidal spheres provides accurate measurements of the gels’ complex viscoelastic modul...
متن کاملA Sorangium cellulosum (myxobacterium) gene cluster for the biosynthesis of the macrolide antibiotic soraphen A: cloning, characterization, and homology to polyketide synthase genes from actinomycetes.
A 40-kb region of DNA from Sorangium cellulosum So ce26, which contains polyketide synthase (PKS) genes for synthesis of the antifungal macrolide antibiotic soraphen A, was cloned. These genes were detected by homology to Streptomyces violaceoruber genes encoding components of granaticin PKS, thus extending this powerful technique for the identification of bacterial PKS genes, which has so far ...
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ژورنال
عنوان ژورنال: BMC Microbiology
سال: 2010
ISSN: 1471-2180
DOI: 10.1186/1471-2180-10-199