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Title: MxaY regulates the lanthanide-mediated methanol dehydrogenase switch in Methylomicrobium buryatense

Journal Article · · PeerJ
DOI:https://doi.org/10.7717/peerj.2435· OSTI ID:1362115

Many methylotrophs, microorganisms that consume carbon compounds lacking carbon–carbon bonds, use two different systems to oxidize methanol for energy production and biomass accumulation. The MxaFI methanol dehydrogenase (MDH) contains calcium in its active site, while the XoxF enzyme contains a lanthanide in its active site. The genes encoding the MDH enzymes are differentially regulated by the presence of lanthanides. In this study, we found that the histidine kinase MxaY controls the lanthanide-mediated switch in Methylomicrobium buryatense 5GB1C. MxaY controls the transcription of genes encoding MxaFI and XoxF at least partially by controlling the transcript levels of the orphan response regulator MxaB. We identify a constitutively active version of MxaY, and identify the mutated residue that may be involved in lanthanide sensing. Finally, we find evidence to suggest that tight control of active MDH production is required for wild-type growth rates.

Research Organization:
Univ. of Washington, Seattle, WA (United States). Dept. of Chemical Engineering
Sponsoring Organization:
USDOE
Grant/Contract Number:
AR0000350
OSTI ID:
1362115
Journal Information:
PeerJ, Vol. 4; ISSN 2167-8359
Publisher:
PeerJ Inc.Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 44 works
Citation information provided by
Web of Science

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Cited By (14)

Similar but Not the Same: First Kinetic and Structural Analyses of a Methanol Dehydrogenase Containing a Europium Ion in the Active Site journal April 2018
Biochemical and Structural Characterization of XoxG and XoxJ and Their Roles in Lanthanide‐Dependent Methanol Dehydrogenase Activity journal July 2019
The cellular response towards lanthanum is substrate specific and reveals a novel route for glycerol metabolism in Pseudomonas putida KT2440 posted_content May 2019
Use of rare‐earth elements in the phyllosphere colonizer Methylobacterium extorquens PA1 journal February 2019
New pieces to the lanthanide puzzle journal March 2019
Novel facultative Methylocella strains are active methane consumers at terrestrial natural gas seeps journal October 2019
Fatty Acid Biosynthesis Pathways in Methylomicrobium buryatense 5G(B1) journal January 2017
Rare Earth Elements Alter Redox Balance in Methylomicrobium alcaliphilum 20ZR journal November 2018
The PedS2/PedR2 two-component system is crucial for the rare earth element switch in Pseudomonas putida KT2440 collection January 2018
Functional role of lanthanides in enzymatic activity and transcriptional regulation of Pyrroloquinoline quinone-dependent alcohol dehydrogenases in Pseudomonas putida KT2440 collection January 2017
Use of rare-earth elements in the phyllosphere colonizer Methylobacterium extorquens PA1 text January 2019
The Chemistry of Lanthanides in Biology: Recent Discoveries, Emerging Principles, and Technological Applications journal August 2019
Natural Selection in Synthetic Communities Highlights the Roles of Methylococcaceae and Methylophilaceae and Suggests Differential Roles for Alternative Methanol Dehydrogenases in Methane Consumption journal December 2017
Differential Transcriptional Activation of Genes Encoding Soluble Methane Monooxygenase in a Facultative Versus an Obligate Methanotroph journal March 2018