Methylophilus: A New Genus of Methanol-Utilizing Bacteria

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Abstract
A new genus, Methylophilus, and species of restricted facultative methanol-utilizing bacteria are described. These bacteria are aerobic gram-negative rods that occur singly and in pairs. In addition to methanol and glucose, a limited range of other carbon compounds including fructose and methylamines may be used as the sole carbon and energy source. The fatty acid composition is primarily of the nonhydroxylated straight-chain saturated and monounsaturated types. The major isoprenoid quinone components are ubiquinones with eight isoprene units. The major polar lipid components are phosphatidylglycerol and phosphatidylethanolamine. The deoxyribonucleic acid base composition is 50 to 53 mol% guanine plus cytosine. The name of the genus proposed for these bacteria is Methylophilus gen. nov. The name of the type species is Methylophilus methylotrophus sp. nov. The type strain is AS1 (= NCIB 10515).

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