Methanomonas margaritaeのメタン酸化に対する銅イオンの役割

概要

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The role of copper ions methane oxidation by Methanomonas margaritae 2-19 was examined. When the organism was grown on methane, growth was highly accelerated by the addition of copper ions. However, the copper effect was not observed in the case of growth on methanol. The methane oxidation activity of the cells grown in the presence of added copper ions was much higher in the exponential phase than that of the cells grown in the absence of added copper ions. The methane oxidation was inhibited by copper-chelating reagents. A large amount of the copper ions taken up by the cells was found in the particulate fractions. The cellular ultrastructure of the organism was characterized by the cytoplasmic membrane and the intracytoplasmi membrane. The intracytoplasmic membranes were revealed as closed circles in a double-layered unit near the periphery of the cell.It is considered, on the basis of the above results, that copper ions take part in the initial step of the metabolism of methane and the cell membranes play an important role in methane oxidation.
社団法人日本生物工学会の論文
1976-08-25