Abstract
A distinctive whiff of sulfides provided an unexpected dividend for then-graduate student James Moran while he was working with a carbon monoxide-metabolizing archeal methanogen Methanosarcina acetovorans. Now at McMaster University in Hamilton, Ontario, Canada, Moran was a graduate student with Christopher House of Pennsylvania State University at University Park. “Our study presents a novel hypothesis that methyl mercaptan is the product of anaerobic methane oxidation and that this compound is then consumed by sulfate-reducing bacteria,” House says. Additional details describing how such methanogens act symbiotically with sulfate-reducing bacteria to oxidize methane coming from deep-sea seeps appear in the January 2008 issue of Environmental Microbiology (10: 162–173).
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