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MethylobacteriumRANK: GenusTAXONOMY: cellular organisms -> Bacteria -> Proteobacteria -> Alphaproteobacteria -> Rhizobiales -> Methylobacteriaceae -> Methylobacterium OVERVIEW: The 'Methylobacteria' are a genus of Rhizobiales.Garrity, George M.; Brenner, Don J.; Krieg, Noel R.; Staley, James T. (eds.) (2005). Bergey's Manual of Systematic Bacteriology, Volume Two: The Proteobacteria, Part C: The Alpha-, Beta-, Delta-, and Epsilonproteobacteria. New York, New York: Springer. ISBN 978-0-387-24145-6. As well as its normal habitats in soil and water, Methylobacterium has also been identified as a contaminant of DNA extraction kit reagents, which may lead to its erroneous appearance in microbiota or metagenomic datasets. Rods 0.8–1.2 × 1.0–8.0 µm that occasionally branch and/or exhibit polar growth. Form pink to orange-red colonies on methanol salts agar. Stain Gram negative to Gram variable; Gram-negative cell wall type. Motile by means of a single polar, subpolar, or lateral flagellum. Aerobic, having a strictly respiratory type of metabolism with oxygen as the terminal electron acceptor. Mesophilic. Chemoorganotrophic and facultatively methylotrophic, able to grow with formaldehyde (often at micromolar concentrations), formate, and methanol; some strains grow on methylated amines. Widely distributed in nature. The mol% G + C of the DNA is: 68.0–72.4. This genus contains microbial species that can reside in the human gastrointestinal tract. [PMC 4262072]
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