2016
DOI: 10.3389/fmicb.2016.01425
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Wide Distribution of Genes for Tetrahydromethanopterin/Methanofuran-Linked C1 Transfer Reactions Argues for Their Presence in the Common Ancestor of Bacteria and Archaea

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Cited by 19 publications
(17 citation statements)
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“…This Nitrosococcus lineage first transferred its pmoCAB genes to Alphaproteobacteria methanotrophs and then later to the gammaproteobacterial methanotrophs. This fits with recent analyses showing that some gammaproteobacterial nitrifiers: specifically Nitrosococcus wardiae ( Wang et al, 2016 ) and Nitrosococcus halophilus ( Campbell et al, 2011a ), encode a complete methane-oxidation pipeline, including methanol dehydrogenase, a tetrahydromethanopterin-based formaldehyde oxidation pathway, and formate dehydrogenase ( Chistoserdova, 2016 ; Wang, 2016 ). These findings may indicate that ancestors of extant Nitrosococcus once functioned primarily as methanotrophs.…”
Section: Discussionsupporting
confidence: 90%
“…This Nitrosococcus lineage first transferred its pmoCAB genes to Alphaproteobacteria methanotrophs and then later to the gammaproteobacterial methanotrophs. This fits with recent analyses showing that some gammaproteobacterial nitrifiers: specifically Nitrosococcus wardiae ( Wang et al, 2016 ) and Nitrosococcus halophilus ( Campbell et al, 2011a ), encode a complete methane-oxidation pipeline, including methanol dehydrogenase, a tetrahydromethanopterin-based formaldehyde oxidation pathway, and formate dehydrogenase ( Chistoserdova, 2016 ; Wang, 2016 ). These findings may indicate that ancestors of extant Nitrosococcus once functioned primarily as methanotrophs.…”
Section: Discussionsupporting
confidence: 90%
“…Instead, this genomic arrangement points to an ancient origin of features, including the acquisition of individual genes and/or repurposing of endogenous genes. This observation is in-line with the deepest rooting of some of the key enzymes involved in methylotrophy [32,33].…”
Section: Genome-wide Identification Of Methylotrophy Genessupporting
confidence: 78%
“…Other uses have been proposed, such as participation in the oxidation of short-chain alkanes 3,9 . Five enzymatic steps are involved: in the reductive direction, (1) CO 2 is reduced to MF-bound formyl (Fwd enzyme complex), (2) formyl is transferred to H 4 MPT (Ftr), cyclized into (3) methenyl (Mch), and then progressively reduced to (4) methylene (Mtd/Hmd) and (5) methyl (Mer) (Figure 1). Then, the H 4 MPT-bound methyl is either transferred to coenzyme M and reduced to methane (methanogenesis), or combined with CO and CoA to form acetyl-CoA in the carbonyl branch of the WL pathway (CO 2 fixation).…”
Section: Of Recently Sequenced Lineages Leads To An Important Shortenmentioning
confidence: 99%
“…These include some Gemmatimonadetes, proposed to be aerobic methylotrophs 15 , and the candidate division NC10, including Candidatus Methylomirabilis oxyfera which is anaerobic and performs methane oxidation coupled to denitrification 16 . Nonetheless, many bacteria with an H 4 MPT branch are non-methylotrophic and their use of the pathway is unknown 2,5 . Even among Proteobacteria there exist some non-methylotrophs (e.g.…”
Section: Of Recently Sequenced Lineages Leads To An Important Shortenmentioning
confidence: 99%