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An accurate method for estimation of the intracellular aqueous volume of Escherichia coli cells
Abstract
The intracellular aqueous volumes (V(in)) of microorganisms are fundamental data that can be used for estimating absolute cellular enzyme and metabolite concentrations. Because traditional methods are time-consuming and costly, the V(in) data have been largely estimated ambiguously. Here we developed an NAD(+) concentration-dependent method and demonstrated its usefulness for accurate estimation of the V(in) value of Escherichia coli cells. The V(in) value of E. coli BL21(DE3) cells was determined to be 1.9 μL·mg(-1), which is 17% lower than that of the commonly assumed data. Similarly, the V(in) value of Agrobacterium tumefaciens AGL1 cells was determined to be 1.8 μL·mg(-1). Because NAD(+) is routinely quantified during metabolite analysis, it may be integrated into metabolomic data collection with little additional time and labor expenditure. This method should also be applicable to estimate the V(in) data of other prokaryotic microorganisms.
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“The intracellular volume of a typical bacterial cell is on the order of a femtoliter69 – in other words, if one femtomole of PFAS enters a cell and undergoes one C–F bond cleavage, the fluoride concentration will approach 1 M.”
From The link between ancient microbial fluoride resistance mechanisms and bioengineering organofluorine degradation or synthesis (2024) · cites this paper as [69]
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Cites
Absolute metabolite concentrations and implied enzyme active site occupancy in Escherichia coli
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Absolute quantitation of intracellular metabolite concentrations by an isotope ratio-based approach
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Metabolomics in systems microbiology
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Cited by
Stockbridge, R. B., & Wackett, L. P. (2024) · Nature Communications · doi:10.1038/s41467-024-49018-1 · Cited by 80
Metadata
- Authors
- Wang, L., Zhou, Y. J., Ji, D., & Zhao, Z. K.
- Venue
- Journal of Microbiological Methods
- Publisher
- Elsevier BV
- Published
- 2013-05
- Volume
- 93
- Issue
- 2
- Pages
- 73-76
- ISSN
- 0167-7012
- Cited by
- 17
- References
- 22
- Language
- en
- Licence
- www.elsevier.com/tdm/userlicense/1.0/ (tdm)
- www.elsevier.com/legal/tdmrep-license (tdm)
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- Wang, L., Zhou, Y. J., Ji, D., & Zhao, Z. K. (2013). An accurate method for estimation of the intracellular aqueous volume of Escherichia coli cells. Journal of Microbiological Methods. https://doi.org/10.1016/j.mimet.2013.02.006
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