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General Information
Manuscript title Invariability of central metabolic flux distribution in Shewanella oneidensis MR-1 under environmental or genetic perturbations.
PubMed ID 19610125
Journal Biotechnology Progress
Year 2009
Authors Yinjie J. Tang, Hector Garcia Martin, Adam Deutchbauer, Xueyang Feng, Rick Huang, Xavier Llora, Adam Arkin, Jay D. Keasling
Affiliations Dept. of Energy, Environmental and Chemical Engineering, Washington University, St. Louis, MO63130 and Dept. of Chemical Engineering, University of California, Berkeley, CA
Keywords Shewanella oneidensis, 13C-based, secondary metabolism
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Experiment Description
Organism Shewanella oneidensis
Strain MR-1
Data type flux measurements
Data units % of substrate uptake
Execution date not specified

Experimental Details
Temperature (°C) 30.0
pH 7.0
Carbon source lactate
Culture mode batch
Process condition aerobic
Dilution rate (h⁻¹)
Working volume (L) 0.012
Biomass concentration (g/L) 0.1 - 1.0
Medium composition

Defined [3-13C] sodium L-lactate (98%, Cambridge Isotope, USA) minimal medium (30 mM, pH = 7, buffered with 20 mM PIPES). For salt stress experiments, 330 mM NaCl was added to the medium. To enhance growth, a standard amino acid mix (containing 17 unlabeled amino acids, without tryptophan, glutamine, and asparagine) was added to the medium for a final concentration of 25 μM for each amino acid.

General protocol information Flux analysis method: 13C constrained MFA

Platform: GC-MS

Methods description - Notes

The GC-MS protocol for isotopomer measurement has been described previously [1-3]. In brief, the protein in biomass from the early exponential growth phase (OD600 = 0.3–0.4) was hydrolyzed to free amino acids in 6 M HCl at 100ºC for 24 h. GC-MS samples were prepared in 100 µ ...

[1] Tang YJ, Pingitore F, Mukhopadhyay A, Phan R, Hazen TC, Keasling, JD. Pathway confirmation and flux analysis of central metabolic pathways in Desulfovibrio vulgaris Hildenborough using GC-MS and FT-ICR mass spectrometry. J Bacteriol. 2007;189:940–949.
[2] Tang YJ, Meadows AL, Keasling JD. A kinetic model describing Shewanella oneidensis MR-1 growth, substrate consumption, and product secretion. Biotechnol Bioeng. 2007;96:125–133.
[3] Tang YJ, Ashcroft M, Chen D, Min G, Kim C, Murkhejee B, Larabell C, Keasling JD, Chen FF. Charge-associated effects of fullerene derivatives on microbial structural integrity and central metabolism. Nano Lett. 2007;7:754–760.
[4] Wahl SA, Dauner M, Wiechert, W. New tools for mass isotopomer data evaluation in 13C flux analysis: mass isotope correction, data consistency checking, and precursor relationships. Biotechnol Bioeng. 2004;85:259–268.
[5] Tang YJ, Martin HG, Dehal PS, Deutschbauer A, Llora X, Meadows A, Arkin A, Keasling JD. Metabolic flux analysis of Shewanella spp. reveals evolutionary robustness in central carbon metabolism. Biotechnol Bioeng. 2009;102:1161–1169.
[6] Tang YJ, Hwang JS, Wemmer D, Keasling JD. Shewanella oneidensis MR-1 fluxome under various oxygen conditions. Appl Environ Microbiol. 2007;73:718–729.

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Entered by: Administrator KiMoSysFirst name: Administrator
Affiliation: INESC-ID/IST
Interests: mathematical modeling, accessible data, use of data

Created: 2013-06-20 16:28:46 UTC

Updated: 2020-04-24 16:10:33 UTC

Version: 0

Status: (reviewed) 2013-12-06 17:17:38 UTC

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