16S rRNA gene sequences have been widely used for the identification of prokaryotes. However, the flood of sequences of non-type strains and the lack of a peer-reviewed database for 16S rRNA gene sequences of type strains have made routine identification of isolates difficult and labour-intensive. In the present study, we generated a database containing 16S… (More)
BACKGROUND Currently, the most promising microorganism used for the bio-production of butyric acid is Clostridium tyrobutyricum ATCC 25755T; however, it is unable to use sucrose as a sole carbon source. Consequently, a newly isolated strain, Bacillus sp. SGP1, that was found to produce a levansucrase enzyme, which hydrolyzes sucrose into fructose and… (More)
In this study, a novel system for synthesis of 2-butanone from levulinic acid (γ-keto-acid) via an enzymatic reaction was developed. Acetoacetate decarboxylase (AADC; E.C. 126.96.36.199) from Clostridium acetobutylicum was selected as a biocatalyst for decarboxylation of levulinic acid. The purified recombinant AADC from Escherichia coli successfully converted… (More)
A2O process is a sequential wastewater treatment process that uses anaerobic, anoxic, and oxic chambers for nitrogen and phosphorus removal. In this study, the bacterial communities among these chambers were compared, and the diversity of the bacteria involved in nitrogen and phosphorus removal was surveyed. A pilot-scale A2O process (50 m3 day−1) was… (More)
Quorum sensing gives rise to biofilm formation on the membrane surface, which in turn causes a loss of water permeability in membrane bioreactors (MBRs) for wastewater treatment. Enzymatic quorum quenching was reported to successfully inhibit the formation of biofilm in MBRs through the decomposition of signal molecules, N-acyl homoserine lactones (AHLs).… (More)
The genus Bordetella is reportedly a human or animal pathogen and environmental microbe. We report the draft genome sequence of Bordetella trematum strain HR18, which was isolated from the rumen of Korean native cattle (Hanwoo; Bos taurus coreanae). It is the first genome sequence of a Bordetella sp. isolated from the rumen of cattle.
Acinetobacter species have been reported as opportunistic pathogens. Here, we report the draft genome sequence of Acinetobacter sp. HR7 isolated from the rumen of cannulated Korean native cattle (Hanwoo; Bos taurus coreanae).