Mercury Resistance in a Plasmid-Bearing Strain of Escherichia coli
AUTOR(ES)
Summers, Anne O.
RESUMO
A strain of Escherichia coli carrying genes determining mercury resistance on a naturally occurring resistance transfer factor (RTF) converts 95% of 10−5m Hg2+ (chloride) to metallic mercury at a rate of 4 to 5 nmoles of Hg2+ per min per 108 cells. The metallic mercury is rapidly eliminated from the culture medium as mercury vapor. The volatilizing activity has a temperature dependence and heat sensitivity characteristic of enzymatic catalysis and is inducible by mercuric chloride. Ag+ and Au3+ are markedly inhibitory of mercury volatilization.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=251553Documentos Relacionados
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