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Title: Novel copper-containing membrane monooxygenases (CuMMOs) encoded by alkane-utilizing Betaproteobacteria

Journal Article · · The ISME Journal

Copper-containing membrane monooxygenases (CuMMOs) are encoded by xmoCAB(D) gene clusters and catalyze the oxidation of methane, ammonia, or some short-chain alkanes and alkenes. In a metagenome constructed from an oilsands tailings pond we detected an xmoCABD gene cluster with <59% derived protein sequence identity to genes from known bacteria. Stable isotope probing experiments combined with a specific xmoA qPCR assay demonstrated that the bacteria possessing these genes were incapable of methane assimilation, but did grow on ethane and propane. Single-cell amplified genomes (SAGs) from propane-enriched samples were screened with the specific PCR assay to identify bacteria possessing the target gene cluster. Multiple SAGs of Betaproteobacteria belonging to the genera Rhodoferax and Polaromonas possessed homologues of the metagenomic xmoCABD gene cluster. Unexpectedly, each of these two genera also possessed other xmoCABD paralogs, representing two additional lineages in phylogenetic analyses. Metabolic reconstructions from SAGs predicted that neither bacterium encoded enzymes with the potential to support catabolic methane or ammonia oxidation, but that both were capable of higher n-alkane degradation. The involvement of the encoded CuMMOs in alkane oxidation was further suggested by reverse transcription PCR analyses, which detected elevated transcription of the xmoA genes upon enrichment of water samples with propane as the sole energy source. Enrichments, isotope incorporation studies, genome reconstructions, and gene expression studies therefore all agreed that the unknown xmoCABD operons did not encode methane or ammonia monooxygenases, but rather n-alkane monooxygenases. Finally, this study broadens the known diversity of CuMMOs and identifies these enzymes in non-nitrifying Betaproteobacteria.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23); Natural Sciences and Engineering Research Council of Canada (NSERC); National Research Foundation of Korea
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1597723
Journal Information:
The ISME Journal, Journal Name: The ISME Journal Journal Issue: 3 Vol. 14; ISSN 1751-7362
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (65)

Propionate oxidation in Escherichia coli : evidence for operation of a methylcitrate cycle in bacteria journal October 1997
The gene encoding ammonia monooxygenase subunit A exists in three nearly identical copies in Nitrosospira sp. NpAV journal June 1996
A gene encoding a membrane protein exists upstream of the genes in ammonia oxidizing bacteria: a third member of the operon? journal May 1997
Interactions between methane and the nitrogen cycle in light of climate change journal November 2014
25 years of serving the community with ribosomal RNA gene reference databases and tools journal November 2017
Emissions from oil sands tailings ponds: Review of tailings pond parameters and emission estimates journal March 2015
Long-Term Incubation Reveals Methanogenic Biodegradation of C 5 and C 6 iso -Alkanes in Oil Sands Tailings journal November 2015
Metabolism of BTEX and Naphtha Compounds to Methane in Oil Sands Tailings journal April 2007
Metagenomics of Hydrocarbon Resource Environments Indicates Aerobic Taxa and Genes to be Unexpectedly Common journal September 2013
Hydrocarbon monooxygenase in Mycobacterium: recombinant expression of a member of the ammonia monooxygenase superfamily journal July 2011
Methanotrophic bacteria in oilsands tailings ponds of northern Alberta journal December 2012
Denitrification versus respiratory ammonification: environmental controls of two competing dissimilatory NO3−/NO2− reduction pathways in Shewanella loihica strain PV-4 journal October 2014
Fast, scalable generation of high‐quality protein multiple sequence alignments using Clustal Omega journal January 2011
Insights into the phylogeny and coding potential of microbial dark matter journal July 2013
QIIME allows analysis of high-throughput community sequencing data journal April 2010
Obtaining genomes from uncultivated environmental microorganisms using FACS–based single-cell genomics journal April 2014
Characterization of a long overlooked copper protein from methane- and ammonia-oxidizing bacteria journal October 2018
Virtual Footprint and PRODORIC: an integrative framework for regulon prediction in prokaryotes journal August 2005
The microbiology of oil sands tailings: past, present, future journal March 2017
SeaView Version 4: A Multiplatform Graphical User Interface for Sequence Alignment and Phylogenetic Tree Building journal October 2009
ARB: a software environment for sequence data journal February 2004
Evaluation of general 16S ribosomal RNA gene PCR primers for classical and next-generation sequencing-based diversity studies journal August 2012
Molecular phylogeny of type II methane-oxidizing bacteria isolated from various environments journal September 2002
Thauera butanivorans sp. nov., a C2-C9 alkane-oxidizing bacterium previously referred to as 'Pseudomonas butanovora' journal June 2009
Rhodoferax ferrireducens sp. nov., a psychrotolerant, facultatively anaerobic bacterium that oxidizes acetate with the reduction of Fe(III) journal May 2003
Proposal of Solimonas aquatica sp. nov., reclassification of Sinobacter flavus Zhou et al. 2008 as Solimonas flava comb. nov. and Singularimonas variicoloris Friedrich and Lipski 2008 as Solimonas variicoloris comb. nov. and emended descriptions of the genus Solimonas and its type species Solimonas soli journal October 2010
Kinetic characterization of the soluble butane monooxygenase from Thauera butanivorans, formerly ‘Pseudomonas butanovora’ journal June 2009
CheckM: assessing the quality of microbial genomes recovered from isolates, single cells, and metagenomes journal May 2015
Distribution and diversity of V errucomicrobia methanotrophs in geothermal and acidic environments: Diversity of verrucomicrobial methanotrophs journal April 2014
Methane oxidation coupled to nitrate reduction under hypoxia by the Gammaproteobacterium M ethylomonas denitrificans , sp. nov. type strain FJG1 : Denitrifying metabolism in journal March 2015
Analysis of microbial communities in natural halite springs reveals a domain-dependent relationship of species diversity to osmotic stress: Salinity versus microbial diversity journal October 2018
Environmental detection of octahaem cytochrome c hydroxylamine/hydrazine oxidoreductase genes of aerobic and anaerobic ammonium-oxidizing bacteria journal November 2008
The genome of Polaromonas naphthalenivorans strain CJ2, isolated from coal tar-contaminated sediment, reveals physiological and metabolic versatility and evolution through extensive horizontal gene transfer journal September 2009
Bacterial oxidation of propane journal September 1994
The gene encoding ammonia monooxygenase subunit A exists in three nearly identical copies in Nitrosospira sp. NpAV journal June 1996
Environmental, genomic and taxonomic perspectives on methanotrophic Verrucomicrobia : Perspectives on methanotrophic journal March 2009
A novel family of functional operons encoding methane/ammonia monooxygenase-related proteins in gammaproteobacterial methanotrophs: Novel monooxygenase in Gamma-MOB journal February 2011
Untangling the multiple monooxygenases of Mycobacterium chubuense strain NBB4, a versatile hydrocarbon degrader: Monooxygenases in Mycobacterium NBB4 journal December 2010
The membrane-associated monooxygenase in the butane-oxidizing Gram-positive bacterium Nocardioides sp. strain CF8 is a novel member of the AMO/PMO family: pBMO in Nocardioides sp. strain CF8 journal January 2011
Next-Generation Sequencing Assessment of Eukaryotic Diversity in Oil Sands Tailings Ponds Sediments and Surface Water journal May 2016
The Evolution and Future of Earth’s Nitrogen Cycle journal October 2010
Genomic and Transcriptomic Analyses of the Facultative Methanotroph Methylocystis sp. Strain SB2 Grown on Methane or Ethanol journal March 2014
Phylogeny of All Recognized Species of Ammonia Oxidizers Based on Comparative 16S rRNA and amoA Sequence Analysis: Implications for Molecular Diversity Surveys journal December 2000
An Internal Reference Technique for Accurately Quantifying Specific mRNAs by Real-Time PCR with Application to the tceA Reductive Dehalogenase Gene journal July 2005
Regulation and Evolution of Malonate and Propionate Catabolism in Proteobacteria journal April 2012
Characterization of a Novel Methanol Dehydrogenase in Representatives of Burkholderiales: Implications for Environmental Detection of Methylotrophy and Evidence for Convergent Evolution journal April 2008
XoxF Acts as the Predominant Methanol Dehydrogenase in the Type I Methanotroph Methylomicrobium buryatense journal February 2016
Novel Acetone Metabolism in a Propane-Utilizing Bacterium, Gordonia sp. Strain TY-5 journal October 2006
New Insights into Acetone Metabolism  journal December 2006
Process water treatment in Canada’s oil sands industry: I. Target pollutants and treatment objectives journal March 2008
The Biochemistry of Methane Oxidation journal June 2007
Primer-BLAST: A tool to design target-specific primers for polymerase chain reaction journal June 2012
Genome sequence-based species delimitation with confidence intervals and improved distance functions journal January 2013
The genomic landscape of the verrucomicrobial methanotroph Methylacidiphilum fumariolicum SolV journal January 2014
Genomic Encyclopedia of Bacterial and Archaeal Type Strains, Phase III: the genomes of soil and plant-associated and newly described type strains journal May 2015
The standard operating procedure of the DOE-JGI Microbial Genome Annotation Pipeline (MGAP v.4) journal October 2015
Gene structure and regulation of alkane monooxygenases in propane-utilizing Mycobacterium sp. TY-6 and Pseudonocardia sp. TY-7 journal September 2006
Isolation of Two Novel Marine Ethylene-Assimilating Bacteria, Haliea Species ETY-M and ETY-NAG, Containing Particulate Methane Monooxygenase-like Genes journal January 2012
The Methanol Dehydrogenase Gene, mxaF, as a Functional and Phylogenetic Marker for Proteobacterial Methanotrophs in Natural Environments journal February 2013
Bioremediation via Methanotrophy: Overview of Recent Findings and Suggestions for Future Research journal January 2011
Detection of autotrophic verrucomicrobial methanotrophs in a geothermal environment using stable isotope probing journal January 2012
Diversity and Habitat Preferences of Cultivated and Uncultivated Aerobic Methanotrophic Bacteria Evaluated Based on pmoA as Molecular Marker journal December 2015
Benzene and Naphthalene Degrading Bacterial Communities in an Oil Sands Tailings Pond journal September 2017
Evolutionary History of Copper Membrane Monooxygenases journal October 2018
Characterization of trace gases measured over Alberta oil sands mining operations: 76 speciated C 2 –C 10 volatile organic compounds (VOCs), CO 2 , CH 4 , CO, NO, NO 2 , NO y , O 3 and SO 2 journal January 2010