Fluorine is the thirteenth most abundant element in the earth's crust, but fluoride concentrations in surface water are low and fluorinated metabolites are extremely rare. The fluoride ion is a potent nucleophile in its desolvated state, but is tightly hydrated in water and effectively inert. Low availability and a lack of chemical reactivity have largely… (More)
A new actinomycete strain Micromonospora sp. K310 was isolated from Ghanaian mangrove river sediment. Spectroscopy-guided fractionation led to the isolation of two new compounds from the fermentation culture. One of the compounds is butremycin (2) which is the (3-hydroxyl) derivative of the known Streptomyces metabolite ikarugamycin (1) and the other… (More)
Dithiolopyrrolones are a class of antibiotics that possess the unique pyrrolinonodithiole (4H-[1,2] dithiolo [4,3-b] pyrrol-5-one) skeleton linked to two variable acyl groups. To date, there are approximately 30 naturally occurring dithiolopyrrolone compounds, including holomycin, thiolutin, and aureothricin, and more recently thiomarinols, a unique class… (More)
We report the structural characterization of a new pyrazinone analogue; butrepyrazinone, which was isolated from a new actinomycete strain Verrucosispora sp. K51G recovered from Ghanaian mangrove river sediment. Spectroscopy-guided fractionation led to the isolation of a compound from the fermentation culture and a combination of NMR spectroscopy,… (More)
Presented here is a draft genome sequence of Streptomyces sp. strain CT34, which produces a novel ribosomally synthesized and posttranslationally modified peptide (RiPP). Analysis of the deduced open reading frame set identified the putative RiPP biosynthesis gene cluster, as well as other secondary metabolite gene clusters.
EditoriaL EditoriaL Yersinia ruckeri is a gram-negative rod-shaped bacterium belonging to the family Enterobacteriaceae. It is in the same genus as Yersinia pestis, the causative agent of the bubonic plaque and a category A select agent. The taxonomic assignment of Y. ruckeri, however, has raised controversy since it appears to have diverged from the rest… (More)