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Chen, Y. (author), Sun, A. (author), Wang, M. (author), Zhu, Z. (author), Ouwerkerk, P.B.F. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Glutelins are the most abundant storage proteins in rice grain and can make up to 80 % of total protein content. The promoter region of GluB-1, one of the glutelin genes in rice, has been intensively used as a model to understand regulation of seed-storage protein accumulation. In this study, we describe a zinc finger gene of the Cys3His1 (CCCH...
article 2014
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van Groenestijn, J.W. (author), Geelhoed, J.S. (author), Goorissen, H.P. (author), Meesters, K.P.M. (author), Stams, A.J.M. (author), Claassen, P.A.M. (author), TNO Kwaliteit van Leven (author)
Non-axenic operation of a 400 L trickle bed reactor inoculated with the thermophile Caldicellulosiruptor saccharolyticus, yielded 2.8 molH 2mol hexose converted. The reactor was fed with a complex medium with sucrose as the main substrate, continuously flushed with nitrogen gas, and operated at 73°C. The volumetric productivity was 22 mmolH2(L...
article 2009
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Kovatcheva-Datchary, P. (author), Egert, M. (author), Maathuis, A. (author), Rajilić-Stojanović, M. (author), de Graaf, A.A. (author), Smidt, H. (author), de Vos, W.M. (author), Venema, K. (author), TNO Kwaliteit van Leven (author)
Summary Carbohydrates, including starches, are an important energy source for humans, and are known for their interactions with the microbiota in the digestive tract. Largely, those interactions are thought to promote human health. Using 16S ribosomal RNA (rRNA)-based stable isotope probing (SIP), we identified starch-fermenting bacteria under...
article 2009
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Weelink, S.A.B. (author), Tan, N.C.G. (author), ten Broeke, H. (author), van den Kieboom, C. (author), van Doesburg, W. (author), Langenhoff, A.A.M. (author), Gerritse, J. (author), Junca, H. (author), Stams, A.J.M. (author), TNO Bouw en Ondergrond (author)
A bacterium, strain BC, was isolated from a benzene-degrading chlorate-reducing enrichment culture. Strain BC degrades benzene in conjunction with chlorate reduction. Cells of strain BC are short rods that are 0.6 μm wide and 1 to 2 μm long, are motile, and stain gram negative. Strain BC grows on benzene and some other aromatic compounds with...
article 2008
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Keijser, B.J.F. (author), Zaura, E. (author), Huse, S.M. (author), van der Vossen, J.M.B.M. (author), Schuren, F.H.J. (author), Montijn, R.C. (author), ten Gate, J.M. (author), Crielaard, W. (author), TNO Kwaliteit van Leven (author)
A good definition of commensal microflora and an understanding of its relation to health are essential in preventing and combating disease. We hypothesized that the species richness of human oral microflora is underestimated. Saliva and supragingival plaque were sampled from 71 and 98 healthy adults, respectively. Amplieons from the V6...
article 2008
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Wang, Y. (author), Xiao, Y. (author), Zhang, Y. (author), Chai, C. (author), Wei, G. (author), Wei, X. (author), Xu, H. (author), Wang, M. (author), Ouwerkerk, P.B.F. (author), Zhu, Z. (author), TNO Kwaliteit van Leven (author)
Monosaccharides transporters play important roles in assimilate supply for sink tissue development. In this study, a new monosaccharide transporter gene OsMST6 was identified from rice (Oryza sativa L.). The predicted OsMST6 protein shows typical features of sugar transporters and shares 79.6% identity with the rice monosaccharide transporter...
article 2008
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TNO Kwaliteit van Leven (author), Paauw, A. (author), Caspers, M.P.M. (author), Schuren, F.H.J. (author), Leverstein-van Hall, M.A. (author), Delétoile, A. (author), Montijn, R.C. (author), Verhoef, J. (author), Fluit, A.C. (author)
Background: Isolates of the Enterobacter cloacae complex have been increasingly isolated as nosocomial pathogens, but phenotypic identification of the E. cloacae complex is unreliable and irreproducible. Identification of species based on currently available genotyping tools is already superior to phenotypic identification, but the taxonomy of...
article 2008
document
Weelink, S.A.B. (author), Tan, N.C.G. (author), ten Broeke, H. (author), van Doesburg, W. (author), Langenhoff, A.A.M. (author), Gerritse, J. (author), Stams, A.J.M. (author), TNO Bouw en Ondergrond (author)
A stable anoxic enrichment culture was obtained that degraded benzene with chlorate as an electron acceptor. The benzene degradation rate was 1.65 mM benzene per day, which is similar to reported aerobic benzene degradation rates but 20-1650 times higher than reported for anaerobic benzene degradation. Denaturing gradient gel electrophoresis of...
article 2007
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Egert, M. (author), de Graaf, A.A. (author), Maathuis, A. (author), de Waard, P. (author), Plugge, C.M. (author), Smidt, H. (author), Deutz, N.E.P. (author), Dijkema, C. (author), de Vos, W.M. (author), Venema, K. (author), TNO Kwaliteit van Leven (author)
16S rRNA-based stable isotope probing (SIP) and nuclear magnetic resonance (NMR) spectroscopy-based metabolic profiling were used to identify bacteria fermenting glucose under conditions simulating the human intestine. The TIM-2 in vitro model of the human intestine was inoculated with a GI tract microbiota resembling that of the small intestine...
article 2007
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te Biesebeke, R. (author), Levin, A. (author), Sagt, C. (author), Bartels, J. (author), Goosen, T. (author), Ram, A. (author), van den Hondel, C. (author), Punt, P. (author), TNO Kwaliteit van Leven (author)
Aspergillus oryzae requires polarized growth for colonization of solid substrates, and this growth phenotype differs from that seen in liquid medium. Various experimental approaches were used to identify genes that are differentially expressed when A. oryzae is grown on wheat kernels and in a wheat-based liquid medium. Hybridization of A. oryzae...
article 2005
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TNO Kwaliteit van Leven (author), Kralj, S. (author), Stripling, E. (author), Sanders, P. (author), van Geel-Schutten, G.H. (author), Dijkhuizen, L. (author)
Lactobacillus reuteri strain ATCC 55730 (LB BIO) was isolated as a pure culture from a Reuteri tablet purchased from the BioGaia company. This probiotic strain produces a soluble glucan (reuteran), in which the majority of the linkages are of the alpha-(1→4) glucosidic type (∼70%). This reuteran also contains alpha-(1→6)-linked glucosyl units...
article 2005
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Kralj, S. (author), van Geel-Schutten, G.H. (author), Dondorff, M.M.G. (author), Kirsanovs, S. (author), van der Maarel, M.J.E.C. (author), Dijkhuizen, L. (author), TNO Voeding Centraal Instituut voor Voedingsonderzoek TNO (author)
Members of the genera Streptococcus and Leuconostoc synthesize various α-glucans (dextran, alternan and mutan). In Lactobacillus, until now, the only glucosyltransferase (GTF) enzyme that has been characterized is gtfA of Lactobacillus reuteri 121, the first GTF enzyme synthesizing a glucan (reuteran) that contains mainly α-(1 → 4) linkages...
article 2004
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Majhenič, A.Č. (author), Venema, K. (author), Allison, G.E. (author), Matijašić, B.B. (author), Rogelj, I. (author), Klaenhammer, T.R. (author), TNO Voeding (author)
Lactobacillus gasseri LF221, an isolate from the feces of a child, produces two bacteriocins. Standard procedures for molecular techniques were used to locate, clone and sequence the fragments of LF221 chromosomal DNA carrying the acidocin LF221 A and B structural genes, respectively. Sequencing analysis revealed the gene of acidocin LF221 A to...
article 2004
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Prins Maurits Laboratorium TNO (author), Broekhuijsen, M.P. (author), Larsson, P. (author), Johansson, A. (author), Byström, M. (author), Eriksson, U. (author), Larsson, E. (author), Prior, R.G. (author), Sjöstedt, A. (author), Titball, R.W. (author), Forsman, M. (author)
Francisella tularensis is a potent pathogen and a possible bioterrorism agent. Little is known, however, to explain the molecular basis for its virulence and the distinct differences in virulence found between the four recognized subspecies, F. tularensis subsp. tularensis, F. tularensis subsp. mediasiatica, F. tularensis subsp. holarctica, and...
article 2003
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TNO Voeding (author), Pouvreau, L. (author), Gruppen, H. (author), van Koningsveld, G.A. (author), van den Broek, L.A.M. (author), Voragen, A.G.J. (author)
The gene of the most abundant protease inhibitor in potato cv. Elkana was isolated and sequenced. The deduced amino acid sequence of this gene showed 98% identity with potato serine protease inhibitor (PSPI), a member of the Kunitz family. Therefore, the most abundant protease inhibitor was considered to be one of the isoforms of PSPI. The PSPI...
article 2003
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TNO Voeding Centraal Instituut voor Voedingsonderzoek TNO (author), Posthuma, C.C. (author), Bader, R. (author), Engelmann, R. (author), Postma, P.W. (author), Hengstenberg, W. (author), Pouwels, P.H. (author)
Purification of xylulose 5-phosphate phosphoketolase (XpkA), the central enzyme of the phosphoketolase pathway (PKP) in lactic acid bacteria, and cloning and sequence analysis of the encoding gene, xpkA, from Lactobacillus pentosus MD363 are described, xpkA encodes a 788-amino-acid protein with a calculated mass of 88,705 Da. Expression of xpkA...
article 2002
document
Centraal Instituut voor Voedingsonderzoek TNO TNO Voeding (author), van der Vlugt-Bergmans, C.J.B. (author), van der Werf, M.J. (author)
A monoterpene ε-lactone hydrolase (MLH) from Rhodococcus erythropolis DCL14, catalyzing the ring opening of lactones which are formed during degradation of several monocyclic monoterpenes, including carvone and menthol, was purified to apparent homogeneity. It is a monomeric enzyme of 31 kDa that is active with (4R)-4-isopropenyl-7-methyl-2-oxo...
article 2001
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Centraal Instituut voor Voedingsonderzoek TNO TNO Voeding (author), Jore, J.P.M. (author), van Luijk, N. (author), Luiten, R.G.M. (author), van der Werf, M.J. (author), Pouwels, P.H. (author)
A 3.6-kb endogenous plasmid was isolated from a Propionibacterium freudenreichii strain and sequenced completely. Based on homologies with plasmids from other bacteria, notably a plasmid from Mycobacterium, a region harboring putative replicative functions was defined. Outside this region two restriction enzyme recognition sites were used for...
article 2001
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Vriesema, A.J.M. (author), Dankert, J. (author), Zaat, S.A.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
We aimed to identify transcription signal sequences from Streptococcus gordonii strain CH1 by random chromosomal cloning. Five genomic fragments from a Sau3A digest, which constitutively activated transcription of a promoterless spectinomycin resistance gene in this strain, were isolated and characterized. Additionally, one promoter fragment was...
article 1999
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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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