Content Tagged "ORNL"
Kbase is currently in alpha release and is targeted for full production release in early 2013.The community-driven and scalable open-source system is intended to provide a framework for evidence-based functional annotation of genome sequences. It will also enable the creation of metabolic and regulatory models that may be used to generate scientific hypotheses; as well… [Read More]
A newly decoded bacterial genome brings scientists one step closer to unlocking the secret behind the production of methylmercury, the chemical notorious for contaminating tuna and other seafood. Most mercury pollution comes from the burning of fossil fuels. Once in the atmosphere, it seeps into the rain and gradually trickles down to the sea. Certain… [Read More]
The new genome, sequenced at the California-based DOE Joint Genome Institute, and completed at Oak Ridge National Laboratory, was published in the Journal of Bacteriology. It lays the foundation for future research to examine the little understood mechanisms behind the production of methylmercury. “We know a little about the bacteria that produce methylmercury but we… [Read More]
“What is not known are the genes or the proteins that allow these bacteria to mediate the transformation,” said ORNL’s Steven Brown, who led a research team to sequence the genome of a bacterium in the Desulfovibrio genus that is capable of methylating mercury. The new genome, sequenced at the California-based DOE Joint Genome Institute… [Read More]
Desulfovibrio desulfuricans strain ND132 is an organism that thrives in sediments and soils without oxygen — the places in lakes, streams and wetlands where mercury contamination is converted to methylmercury. It is representative of a group of organisms that “breathe” sulfate instead of oxygen and are largely responsible for mercury methylation in nature. “This is… [Read More]
“We are looking to better understand the evolution of microbes in the groundwater plume,” Watson said. “The microbes that can break down nitrate into nitrogen can have a long-term benefit toward attenuating the plume.” Watson added that researchers particularly want to better understand the genetic makeup of microbes that can metabolize oxidized forms of uranium… [Read More]