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Methane, the primary component of natural gas, is the second most abundant greenhouse gas (GHG) and contributes significantly to climate change. The conversion of methane to industrial platform chemicals provides an attractive opportunity to decrease GHG emissions and utilize this inexpensive and abundantly available gas as a carbon feedstock. While technologies exist for chemical conversion of methane to liquid fuels, the technical complexity of these processes mandate high capital expenditure, large-scale commercial facilities to leverage economies of scale that cannot be efficiently scaled down. Alternatively, bioconversion technologies capable of efficient small-scale operation with high carbon and energy efficiency can enable deployment at remote methane resources inaccessible to current chemical technologies. Aerobic obligate methanotrophs, specifically Methylomicrobium buryatense 5GB1, have recently garnered increased research interest for development of such bio-technologies. In this study, we demonstrate production of C-4 carboxylic acids non-native to the host, specifically crotonic and butyric acids, from methane in an engineered M. buryatense 5GB1C by diversion of carbon flux through the acetyl-CoA node of central 'sugar' linked metabolic pathways using reverse β-oxidation pathway genes. The synthesis of short chain carboxylic acids through the acetyl-CoA node demonstrates the potential for engineering M. buryatense 5GB1 as a platform for bioconversion of methane to a number of value added industrial chemicals, and presents new opportunities for further diversifying the products obtainable from methane as the feedstock.
This article was published in the following journal.
Name: Metabolic engineering
Methane in the seabed is mostly oxidized to CO with sulfate as the oxidant before it reaches the overlying water column. This microbial oxidation takes place within the sulfate-methane transition (SMT...
The present study proposed and demonstrated a novel process for the bioconversion of syngas (mainly CO and H) to valuable volatile fatty acids (VFA) by integrating with mesophilic alkaline fermentatio...
Clostridium ljungdahlii has emerged as an attractive candidate for the bioconversion of synthesis gas (CO, CO, H) to a variety of fuels and chemicals through the Wood-Ljungdahl pathway. However, metab...
Perchlorate bioreduction coupled to methane oxidation was successfully achieved without the addition of nitrate or nitrite in a membrane biofilm reactor (MBfR) inoculated with a mixture of freshwater ...
An efficient and redox-neutral synthesis of 2 H-chromene-3-carboxylic acids from N-phenoxyacetamides and methyleneoxetanones has been realized via a solvent-controlled and rhodium(III)-catalyzed C-H a...
This study is a double-blind randomized, placebo-controlled, parallel-group, 12 week study performed in up to 5 centres in Sweden to assess the effect of Omega-3 carboxylic acids and dapag...
A Study to Investigate How Common Pancreatic Exocrine Insufficiency (PEI) is in Patients With Type 2 Diabetes and Also to Investigate the Uptake of a Single Dose of EPANOVA® or OMACOR® in Patients With Different Degrees of PEI
This study is a 2-part open-label, randomized, crossover, multicenter, non-therapeutic Phase II study to investigate the presence of pancreatic exocrine insufficiency (PEI) in patients wit...
Intrauterine growth restriction is a common and complex obstetric problem. Intrauterine growth restriction is noted to affect approximately 10-15 % of pregnant women. Intrauterine growth r...
This study evaluates the effect of high-flux hemodialysis compared to hemodiafiltration on small and moderate molecule substances clearance. Meanwhile, this study evaluates the effect of h...
The aim of this research study is to characterize gut microbiota composition and activity after a daily supplementation of 4.5 g of chitin-glucan during 3 weeks. For this purpose, a monoce...
Organic compounds containing the carboxy group (-COOH). This group of compounds includes amino acids and fatty acids. Carboxylic acids can be saturated, unsaturated, or aromatic.
Carboxylic acids that have a homocyclic ring structure in which all the ring atoms are carbon.
A family of anaerobic METHANOCOCCALES whose organisms are thermophilic methanogens that produce methane from hydrogen and simple carbon sources such as carbon dioxide.
Ligases that catalyze the joining of adjacent AMINO ACIDS by the formation of carbon-nitrogen bonds between their carboxylic acid groups and amine groups.
Carboxylic acids that contain a KETONE group.
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...