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Methylocystaceae
Scientific classification
Domain:	Bacteria
Phylum:	Pseudomonadota
Class:	Alphaproteobacteria
Order:	Hyphomicrobiales
Family:	Methylocystaceae Bowman, 2006
Genera
Albibacter Doronina et al. 2001 Chenggangzhangella Yang et al. 2016 Hansschlegelia Ivanova et al. 2010 Methylocystis (ex Whittenbury et al. 1970) Bowman et al. 1993 Methylopila Doronina et al. 1998 Methylosinus (ex Whittenbury et al. 1970) Bowman et al. 1993
Synonyms
"Methylopilaceae" Beck et al. 2015

The Methylocystaceae are a family of bacteria that are capable of obtaining carbon and energy from methane. Such bacteria are called methanotrophs, and in particular the Methylocystaceae comprise the type II methanotrophs, which are structurally and biochemically distinct from the Methylococcaceae or type I methanotrophs.

In this family methane is oxidized to form formaldehyde, which is assimilated by the serine pathway. This involves combining formaldehyde and glycine to form serine, which may be converted into glyceraldehyde and thus into other organic molecules. They can also fix nitrogen, like many other members of the order Hyphomicrobiales. The cells contained paired internal membranes which are arranged towards their periphery.

References

1. "List of Prokaryotic Names with Standing in Nomenclature". Archived from the original on 27 April 2012. Retrieved 20 July 2010.
2. "Methylocystaceae". www.uniprot.org.
3. Beck, D. A. C.; McTaggart, T. L.; Setboonsarng, U.; Vorobev, A.; Goodwin, L.; Shapiro, N.; Woyke, T.; Kalyuzhnaya, M. G.; Lidstrom, M. E.; Chistoserdova, L. (2015). "Multiphyletic origins of methylotrophy in Alphaproteobacteria, exemplified by comparative genomics of Lake Washington isolates". Environmental Microbiology. 17 (3): 547–54. Bibcode:2015EnvMi..17..547B. doi:10.1111/1462-2920.12736. PMID 25683159.
4. Nazaries, L.; Murrel, J.C.; Millard, P.; Baggs, L.; Singh, B.K. (2013). "Methane, microbes and models: fundamental understanding of the soil methane cycle for future predictions". Environmental Microbiology. 15 (9): 2395–2417. https://dx.doi.org/10.1111/1462-2920.12149. Bibcode:2013EnvMi..15.2395N. doi:10.1111/1462-2920.12149. PMID 23718889.

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