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FEMS Microbiol Lett. 2000 May 15;186(2):193-5.

Sterols in a psychrophilic methanotroph, Methylosphaera hansonii.

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Department of Marine Biogeochemistry and Toxicology, Netherlands Institute for Sea Research, PO Box 59, 1790 AB, Den Burg, The Netherlands.


A suite of six sterols, lanosterol, lanost-8(9)-en-3beta-ol, 4, 4-dimethylcholesta-8(14),24-dien-3beta-ol, 4, 4-dimethylcholest-8(14)-en-3beta-ol, 4-methylcholesta-8(14), 24-dien-3beta-ol and 4-methylcholest-8(14)-en-3beta-ol, were identified in the psychrophilic methanotrophic bacterium, Methylosphaera hansonii. Their presence suggests that the capacity for sterol biosynthesis in methanotrophic bacteria is limited to the family Methylococcaceae but which have widely different optimal growth temperatures.

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