ArticleMicrobial cell factories2020
Ethylene glycol and glycolic acid production from xylonic acid by Enterobacter cloacae.
Article in Microbial cell factories, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 37 citations in OpenAlex.
- Enzyme and cofactor engineering to increase d-xylonate dehydratase activity for improved d-1,2,4-butanetriol production from d-xylose.Synthetic and systems biotechnology · 2025Article
- NAD-dependent dehydrogenases enable efficient growth of Paracoccus denitrificans on the PET monomer ethylene glycol.Nature communications · 2025Article
- Article
- Investigation of Bottleneck Enzyme Through Flux Balance Analysis to Improve Glycolic Acid Production in Escherichia coli.Journal of microbiology (Seoul, Korea) · 2024Article
- Ethylene glycol is metabolized to ethanol and acetate and induces expression of bacterial microcompartments inHeliyon · 2024Article
- Repurposing of waste PET by microbial biotransformation to functionalized materials for additive manufacturing.Journal of industrial microbiology & biotechnology · 2023Article
- Design, Analysis, and Implementation of a Novel Biochemical Pathway for Ethylene Glycol Production inACS synthetic biology · 2022Article
- Characteristics of Gut Microbiota in Patients with GH-Secreting Pituitary Adenoma.Microbiology spectrum · 2022Article
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11 authors at 4 institutions in 3 countries.
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Abstract
backgroundBiological routes for ethylene glycol production have been developed in recent years by constructing the synthesis pathways in different microorganisms. However, no microorganisms have been reported yet to produce ethylene glycol naturally.
resultsXylonic acid utilizing microorganisms were screened from natural environments, and an Enterobacter cloacae strain was isolated. The major metabolites of this strain were ethylene glycol and glycolic acid. However, the metabolites were switched to 2,3-butanediol, acetoin or acetic acid when this strain was cultured with other carbon sources. The metabolic pathway of ethylene glycol synthesis from xylonic acid in this bacterium was identified. Xylonic acid was converted to 2-dehydro-3-deoxy-D-pentonate catalyzed by D-xylonic acid dehydratase. 2-Dehydro-3-deoxy-D-pentonate was converted to form pyruvate and glycolaldehyde, and this reaction was catalyzed by an aldolase. D-Xylonic acid dehydratase and 2-dehydro-3-deoxy-D-pentonate aldolase were encoded by yjhG and yjhH, respectively. The two genes are part of the same operon and are located adjacent on the chromosome. Besides yjhG and yjhH, this operon contains four other genes. However, individually inactivation of these four genes had no effect on either ethylene glycol or glycolic acid production; both formed from glycolaldehyde. YqhD exhibits ethylene glycol dehydrogenase activity in vitro. However, a low level of ethylene glycol was still synthesized by E. cloacae ΔyqhD. Fermentation parameters for ethylene glycol and glycolic acid production by the E. cloacae strain were optimized, and aerobic cultivation at neutral pH were found to be optimal. In fed batch culture, 34 g/L of ethylene glycol and 13 g/L of glycolic acid were produced in 46 h, with a total conversion ratio of 0.99 mol/mol xylonic acid.
conclusionsA novel route of xylose biorefinery via xylonic acid as an intermediate has been established.
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