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  • Title: Inhibition of methanogenesis and carbon metabolism in Methanosarcina sp. by cyanide.
    Author: Smith MR, Lequerica JL, Hart MR.
    Journal: J Bacteriol; 1985 Apr; 162(1):67-71. PubMed ID: 3980448.
    Abstract:
    NaCN was tested for its inhibitory effects on growth of and metabolism by Methanosarcina barkeri 227. NaCN (10 microM) inhibited catabolism of acetate methyl groups to CH4 and CO2 but did not inhibit methanogenesis from methanol, CO2, methylamine, or trimethylamine. NaCN also inhibited the assimilation of methanol or CO2 (as the sole carbon source) into cell carbon and stimulated the assimilation of acetate. These results suggest that inhibition by NaCN was a result of its action as an inhibitor of in vivo CO dehydrogenase. The results also implicate CO dehydrogenase in the oxidation of acetate but not methanol methyl groups to CO2.
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