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  • Title: Some cultural and physiological aspects of methane-utilizing bacteria.
    Author: Hazeu W.
    Journal: Antonie Van Leeuwenhoek; 1975; 41(2):121-34. PubMed ID: 808162.
    Abstract:
    A number of different methane-utilizing bacteria are described and compared with isolates of other investigators. The strains can be divided into three groups based on pigmentation, cell morphology and internal membrane structures. The oxidation of hydrocarbons, alcohols, aldehydes, fatty acids, methyl ethers and sugar phosphates by these bacteria was studied. There was much similarity between strains within the same group. Differences between groups as regards oxidative properties could be detected, but these were mainly quantitative and could not be used as taxonomical criteria. In addition, the inhibition of methane oxidation by metabolites and enzyme inhibitors was investigated. Formaldehyde proved to be the most active of the organic compounds tested. Iodoacetic acid inhibited both methane and methanol oxidation at concentrations of 0.03 M or above. Of the inorganic compounds, KCN completely suppressed methane oxidation at 5 times 10(-4) M and to more than 90% at 5 times 10(-5) M.
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