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Changes in the gene expression profile of Acetobacter aceti during growth on ethanol
Abstract
Acetobacter aceti NBRC 14818 shows a diauxic growth profile and temporarily accumulates acetate when grown in medium containing ethanol. However, the mechanisms underlying the metabolic switching between the incomplete oxidation of ethanol and overoxidation of acetate, and the control of stress resistance systems in A. aceti cells grown on ethanol are not fully understood. In this study, time-dependent transcriptome changes in cells during growth on ethanol were analyzed by DNA microarray. In A. aceti, ethanol is oxidized to acetate via acetaldehyde by sequential reactions of alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH). We found that the genes encoding pyrroloquinoline quinone-dependent ADH, membrane-bound ALDH, and two NAD(+)-ADHs were expressed constitutively in cells throughout the culture period. In contrast, the expression levels of genes encoding tricarboxylic acid (TCA) cycle enzymes were low during acetate accumulation until ethanol was consumed, but were significantly upregulated after the accumulated acetate was started to be consumed. This result suggests that changes in the carbon metabolic flow through the TCA cycle are important for the metabolic switching from acetate accumulation to the overoxidation of acetate. In addition, the genes for glyoxylate pathway enzymes were significantly upregulated soon after the cells began oxidizing ethanol, indicating that this pathway is important for the utilization of ethanol as a carbon source.
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“Acetic acid, the final product of ethanol oxidation, can enter the TCA cycle directly in the form of acetyl-CoA. Acetic acid is first activated by acetyl-CoA synthetase, which catalyzes the reaction between acetic acid and coenzyme A (CoA) to produce acetyl-CoA and an inorganic phosphate (Pi). Acetyl-CoA serves as a direct substrate for the TCA cycle. In the TCA cycle, acetyl-CoA condenses with ox”
From The Metabolic Pathways of Yeast and Acetic Acid Bacteria During Fruit Vinegar Fermentation and Their Influence on Flavor Development (2025) · cites this paper as [64]
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Cited by
Ge, Y., Wu, Y., Aihaiti, A., Wang, L., Wang, Y., Xing, J., Zhu, M., & Hong, J. (2025) · Microorganisms · doi:10.3390/microorganisms13030477 · Cited by 49
Metadata
- Authors
- Sakurai, K., Arai, H., Ishii, M., & Igarashi, Y.
- Affiliations
- The University of Tokyo (JP)
- Corresponding author
- Arai, Hiroyuki
- Venue
- Journal of Bioscience and Bioengineering
- Publisher
- Elsevier BV
- Published
- 2012-03
- Volume
- 113
- Issue
- 3
- Pages
- 343-348
- ISSN
- 1347-4421 (ISSN-L)
- 1389-1723
- OpenAlex
- W2023342879
- Cited by
- 49
- References
- 0
- Citations by year
- 2026: 3 · 2025: 3 · 2024: 7 · 2023: 1 · 2022: 3 · 2021: 1 · 2020: 3 · 2019: 6 · 2018: 4 · 2017: 5 · 2016: 5 · 2015: 4 · 2014: 2 · 2013: 1 · 2012: 1
- FWCI
- 0.52
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Bioscience and Bioengineering (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Japan Society for the Promotion of Science (23658070)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial metabolism and enzyme function
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
- Keywords
- Acetobacter aceti, ethanol oxidation, acetate accumulation, diauxic growth, gene expression profiling, alcohol dehydrogenase, aldehyde dehydrogenase, pyrroloquinoline quinone, NAD-dependent dehydrogenase, TCA cycle, glyoxylate pathway, stress resistance genes
- MeSH terms
- Acetobacter, Alcohol Dehydrogenase, Ethanol, Gene Expression Regulation, Bacterial, Oligonucleotide Array Sequence Analysis, Gene Expression Profiling
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