Searched for: subject%3A%22bacterial%255C%2Bmetabolism%22
(1 - 11 of 11)
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de Graaf, A.A. (author), Maathuis, A. (author), de Waard, P. (author), Deutz, N.E.P. (author), Dijkema, C. (author), de Vos, W.M. (author), Venema, K. (author), TNO Kwaliteit van Leven (author)
This study introduces a stable-isotope metabolic approach employing [U-13C]glucose that, as a novelty, allows selective profiling of the human intestinal microbial metabolic products of carbohydrate food components, as well as the measurement of the kinetics of their formation pathways, in a single experiment. A well-established, validated in...
article 2010
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Wierckx, N. (author), Ruijssenaars, H.J. (author), de Winde, J.H. (author), Schmid, A. (author), Blank, L.M. (author), TNO Kwaliteit van Leven (author)
The physiological effects of genetic and transcriptional changes observed in a phenol producing mutant of the solvent-tolerant Pseudomonas putida S12 were assessed with metabolic flux analysis. The upregulation of a malate/lactate dehydrogenase encoding gene could be connected to a flux increase from malate to oxaloacetate. A mutation in the...
article 2009
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Koopman, F.W. (author), de Winde, J.H. (author), Ruijssenaars, H.J. (author), TNO Kwaliteit van Leven (author)
The solvent-tolerant bacterium Pseudomonas putida S12 was engineered to efficiently utilize the C1 compounds methanol and formaldehyde as auxiliary substrate. The hps and phi genes of Bacillus brevis, encoding two key steps of the ribulose monophosphate (RuMP) pathway, were introduced to construct a pathway for the metabolism of the toxic...
article 2009
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TNO Kwaliteit van Leven (author), Klaassens, E.S. (author), Boesten, R.J. (author), Haarman, M. (author), Knol, J. (author), Schuren, F.H. (author), Vaughan, E.E. (author), Vos, W.M.de (author)
Although their exact function remains enigmatic, bifidobacteria are among the first colonizers of the newborn infant gut and further develop into abundant communities, notably in response to diet. Therefore, the transcriptional responses of bifidobacteria in rapidly processed fecal samples from young infants that were fed either breast milk or a...
article 2009
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Wierckx, N.J.P. (author), Ballerstedt, H. (author), de Bont, J.A.M. (author), de Winde, J.H. (author), Ruijssenaars, H.J. (author), Wery, J. (author), TNO Kwaliteit van Leven (author)
The unknown genetic basis for improved phenol production by a recombinant Pseudomonas putida S12 derivative bearing the tpl (tyrosine-phenol lyase) gene was investigated via comparative transcriptomics, nucleotide sequence analysis, and targeted gene disruption. We show upregulation of tyrosine biosynthetic genes and possibly decreased...
article 2008
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TNO Kwaliteit van Leven (author), van den Berg, R.A. (author), Hoefsloot, H.C.J. (author), Westerhuis, J.A. (author), Smilde, A.K. (author), van der Werf, M.J. (author)
Background: Extracting relevant biological information from large data sets is a major challenge in functional genomics research. Different aspects of the data hamper their biological interpretation. For instance, 5000-fold differences in concentration for different metabolites are present in a metabolomics data set, while these differences are...
article 2006
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van der Werf, M.J. (author), Boot, A.M. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Rhodococcus euythropolis DCL14 assimilates all stereoisomers of carveol and dihydrocarveol as sole source of carbon and energy. Induction experiments with carveol- or dihydrocarveol-grown cells showed high oxygen consumption rates with these two compounds and with carvone and dihydrocarvone. (Dihydro)carveol-grown cells of R. erythropolis DCL14...
article 2000
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Spanhaak, S. (author), Havenaar, R. (author), Schaafsma, G. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Objective: To determine the effect of consumption of milk fermented by Lactobacillus casei strain Shirota (L. casei Shirota) on the composition and metabolic activities of the intestinal microflora, and immune parameters in humans. Subjects: Twenty healthy male subjects aged 40-65 years were selected. Design: A placebo-controlled trial was...
article 1998
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Chaillou, S. (author), Lokman, B.C. (author), Leer, R.J. (author), Posthuma, C. (author), Postma, P.W. (author), Pouwels, P.H. (author)
Two genes, xylP and xylQ, from the xylose regulon of Lactobacillus pentosus were cloned and sequenced. Together with the repressor gene of the regulon, xylR, the xylPQ genes form an operon which is inducible by xylose and which is transcribed from a promoter located 145 bp upstream of xylP. A putative xylR binding site (xylO) and a cre-like...
article 1998
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Zhu, Y. (author), Rinzema, A. (author), Bonarius, H.P.J. (author), Tramper, J. (author), Bol, J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Metabolic flows, especially those of amino acids, were determined and analyzed at different stages of a batch fermentation for microbial transglutaminase production by Streptoverticillium mobaraense. The method is mainly based on mass balances and measurements of amino acids and other metabolites. The measurements included the consumption rate...
article 1998
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van Geel-Schutten, G.H. (author), Flesch, F. (author), ten Brink, B. (author), Smith, M.R. (author), Dijkhuizen, L. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
A total of 182 Lactobacillus strains were screened for production of extracellular polysaccharides (EPS) by a new method: growth in liquid media with high sugar concentrations. Sixty EPS-positive strains were identified; 17 strains produced more than 100 mg/l soluble EPS. Sucrose was an excellent substrate for abundant EPS synthesis. The ability...
article 1998
Searched for: subject%3A%22bacterial%255C%2Bmetabolism%22
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