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A methanotrophic bacterium to enable direct methane capture for climate mitigation

ABSTRACT: A methanotrophic bacterium to enable direct methane capture for climate mitigation

PROVIDER: PRJNA912566 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR22746225_1.fastq.gz	Fastqsanger.gz
	SRR22746225_2.fastq.gz	Fastqsanger.gz
	SRR22746226_1.fastq.gz	Fastqsanger.gz
	SRR22746226_2.fastq.gz	Fastqsanger.gz
	SRR22746227_1.fastq.gz	Fastqsanger.gz

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A methanotrophic bacterium to enable direct methane capture for climate mitigation

Project description:We report here a methanotroph, Methylotuvimicrobium buryatense 5GB1C, that consumes methane at 500ppm at rates several times higher than any previously published. Analyses of bioreactor-based performance and RNAseq based transcriptomics suggest that this superior ability to utilize low methane is based at least in part on an extremely low non-growth associated maintenance energy and on a 5-fold higher methane specific affinity than previous reports.

2023-08-02 | GSE221011 | GEO

A methanotrophic bacterium to enable methane removal for climate mitigation.

Project description:The rapid increase of the potent greenhouse gas methane in the atmosphere creates great urgency to develop and deploy technologies for methane mitigation. One approach to removing methane is to use bacteria for which methane is their carbon and energy source (methanotrophs). Such bacteria naturally convert methane to CO2 and biomass, a value-added product and a cobenefit of methane removal. Typically, methanotrophs grow best at around 5,000 to 10,000 ppm methane, but methane in the atmosphere is 1.9 ppm. Air above emission sites such as landfills, anaerobic digestor effluents, rice paddy effluents, and oil and gas wells contains elevated methane in the 500 ppm range. If such sites are targeted for methane removal, technology harnessing aerobic methanotroph metabolism has the potential to become economically and environmentally viable. The first step in developing such methane removal technology is to identify methanotrophs with enhanced ability to grow and consume methane at 500 ppm and lower. We report here that some existing methanotrophic strains grow well at 500 ppm methane, and one of them, Methylotuvimicrobium buryatense 5GB1C, consumes such low methane at enhanced rates compared to previously published values. Analyses of bioreactor-based performance and RNAseq-based transcriptomics suggest that this ability to utilize low methane is based at least in part on extremely low non-growth-associated maintenance energy and on high methane specific affinity. This bacterium is a candidate to develop technology for methane removal at emission sites. If appropriately scaled, such technology has the potential to slow global warming by 2050.

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