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Published: Saturday 27 July, 2013

michael kors bags outlet online michael kors bags outlet online ´╗┐Environmental decontamination

Mention greenhouse gases to most people and theyre apt to think of carbon dioxide, fossil fuels, and big cars. Though carbon dioxide emissions are the major source of greenhouse gases, methane is far more effective at trapping heat in the atmosphere. Like increasing carbon dioxide levels, rising levels of atmospheric methane have been attributed to human activity, mostly i michael kors bags outlet online n the form of landfills, natural gas and oil processing about 60%, domesticated livestock cattle account for about 75% of livestock contributions, and rice fields up to 29% of total emissions.

Luckily, there are microbes, called methanotrophs, that consume methane. Theyve been found in soils, landfills, sediments, hotsprings, and peat bogs, among other environments. Methanotrophs have been the subject of increasing interest because they can use methane as a sole source of carbon and energy and could dramatically reduce biologically generated methane emissions. Theyve also bee michael kors bags outlet online n the focus of bioremediation efforts aimed at environmental decontamination. And now, with the publication of the first complete genome sequence of a methanotroph, such efforts wi michael kors bags outlet online ll be all the easier. This week in PLoS Biology, a multidisciplinary team spanning the fields of genomics, bioinformatics, microbiology, evolutionary biology, and molecular biology report the complete genome sequence of Methylococcus capsulatus and shed light on the metabolism and biology of this ubiquitous microbe.

The genome appears wellequipped to meet the specialized needs of this methanotroph. Ward et al. found evidence of genomic redundancy in methane oxidation pathways, suggesting that M. capsulatus employs different pathways depending on the availability of molecules needed to sustain cellular activities. Most surprising, the researchers note, was evidence that this methane specialist can turn into a sort of metabolic generalistwith a capacity to use sugars, hydrogen, and sulfurand appears able to survive reduced oxygen levels.

The M. capsulatus genome provides a platform for investigating the details of methanotroph biology and its potential as a biotech workhorse. It may also guide efforts to harness this bacteriums penchant for methane to reduce global greenhouse gas emissions, to degrade chlorinated hydrocarbons and other persistent pollutants, and to produce protein for animal feed. michael kors bags outlet online