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Journal Article

Benzoate Mediates Repression of C(4)-Dicarboxylate Utilization in "Aromatoleum aromaticum" EbN1

MPS-Authors
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Trautwein,  K.
Department of Microbiology, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Grundmann,  O.
Max Planck Institute for Marine Microbiology, Max Planck Society;

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Woehlbrand,  L.
Department of Microbiology, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Rabus,  R.
Department of Microbiology, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Tautwein12.pdf
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Citation

Trautwein, K., Grundmann, O., Woehlbrand, L., Eberlein, C., Boll, M., & Rabus, R. (2012). Benzoate Mediates Repression of C(4)-Dicarboxylate Utilization in "Aromatoleum aromaticum" EbN1. Journal of Bacteriology, 194(2), 518-528.


Cite as: http://hdl.handle.net/21.11116/0000-0001-C899-1
Abstract
Diauxic growth was observed in anaerobic C4-dicarboxylate-adapted cells of “Aromatoleum aromaticum” EbN1 due to preferred benzoate utilization from a substrate mixture of a C4-dicarboxylate (succinate, fumarate, or malate) and benzoate. Differential protein profiles (two-dimensional difference gel electrophoresis [2D DIGE]) revealed dynamic changes in abundance for proteins involved in anaerobic benzoate catabolism and C4-dicarboxylate uptake. In the first active growth phase, benzoate utilization was paralleled by maximal abundance of proteins involved in anaerobic benzoate degradation (e.g., benzoyl-coenzyme A [CoA] reductase) and minimal abundance of DctP (EbA4158), the periplasmic binding protein of a predicted C4-dicarboxylate tripartite ATP-independent periplasmic (TRAP) transporter (DctPQM). The opposite was observed during subsequent succinate utilization in the second active growth phase. The increased dctP (respectively, dctPQM) transcript and DctP protein abundance following benzoate depletion suggests that repression of C4-dicarboxylate uptake seems to be a main determinant for the observed diauxie.