NEW YORK (GenomeWeb) – Orthologs of the same gene pair seem to spur mercury methylation across a range of bacterial and archaeal species, according to a study published online today in Science.

"Among bacteria and archaea with sequenced genomes, gene orthologs are present in confirmed methylators but absent in non-methylators," the study's authors explained, "suggesting a common mercury methylation pathway in all methylating bacteria and archaea sequenced to date."

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