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Cited by 295

The DOI matches its Crossref record; 33 of the 33 references it cites were found in a registry or an index.

Extensive exometabolome analysis reveals extended overflow metabolism in various microorganisms

Open access
Paczia, Nicole, Nilgen, Anke, Lehmann, Tobias, Gätgens, Jochem, Wiechert, Wolfgang, Noack, Stephan·2012·Microbial Cell Factories

Abstract

Overflow metabolism is well known for yeast, bacteria and mammalian cells. It typically occurs under glucose excess conditions and is characterized by excretions of by-products such as ethanol, acetate or lactate. This phenomenon, also denoted the short-term Crabtree effect, has been extensively studied over the past few decades, however, its basic regulatory mechanism and functional role in metabolism is still unknown. Here we present a comprehensive quantitative and time-dependent analysis of the exometabolome of Escherichia coli, Corynebacterium glutamicum, Bacillus licheniformis, and Saccharomyces cerevisiae during well-controlled bioreactor cultivations. Most surprisingly, in all cases a great diversity of central metabolic intermediates and amino acids is found in the culture medium with extracellular concentrations varying in the micromolar range. Different hypotheses for these observations are formulated and experimentally tested. As a result, the intermediates in the culture medium during batch growth must originate from passive or active transportation due to a new phenomenon termed “extended” overflow metabolism. Moreover, we provide broad evidence that this could be a common feature of all microorganism species when cultivated under conditions of carbon excess and non-inhibited carbon uptake. In turn, this finding has consequences for metabolite balancing and, particularly, for intracellular metabolite quantification and 13 C-metabolic flux analysis.

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Metadata

Authors
Paczia, N., Nilgen, A., Lehmann, T., Gätgens, J., Wiechert, W., & Noack, S.
Venue
Microbial Cell Factories
Published
2012-09-11
Volume
11
Issue
1
Pages
122-122
ISSN
1475-2859 (ISSN-L)
OpenAlex
W2131223372
Cited by
295
References
33
FWCI
6.04
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Extensive exometabolome analysis reveals extended overflow metabolism in various microorganisms. https://app.cochat.ai/papers/10.1186/1475-2859-11-122
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Paczia, N., Nilgen, A., Lehmann, T., Gätgens, J., Wiechert, W., & Noack, S. (2012). Extensive exometabolome analysis reveals extended overflow metabolism in various microorganisms. Microbial Cell Factories. https://doi.org/10.1186/1475-2859-11-122

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