Results 141 to 150 of about 7,120 (174)

The puf operon region of Rhodobacter sphaeroides

Photosynthesis Research, 1988
The puf operon of the purple nonsulfur photosynthetic bacterium, Rhodobacter sphaeroides, contains structural gene information for at least two functionally distinct bacteriochlorophyll-protein complexes (light harvesting and reaction center) which are present in a fixed ratio within the photosynthetic intracytoplasmic membrane.
T J, Donohue, P J, Kiley, S, Kaplan
openaire   +2 more sources

Postgenomic Adventures with Rhodobacter sphaeroides

Annual Review of Microbiology, 2007
This review describes some of the recent highlights taken from the studies of Rhodobacter sphaeroides 2.4.1. The review is not intended to be comprehensive, but to reflect the bias of the authors as to how the availability of a sequenced and annotated genome, a gene-chip, and proteomic profile as well as comparative genomic analyses can direct the ...
Chris, Mackenzie, Jesus M, Eraso, Madhusudan, Choudhary, Jung Hyeob, Roh, Xiaohua, Zeng, Patrice, Bruscella, Agnes, Puskás, Samuel, Kaplan   +7 more
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Overproducton of mannitol dehydrogenase in Rhodobacter sphaeroides

Applied Microbiology and Biotechnology, 1994
Mannitol dehydrogenase (MDH) from Rhodobacter sphaeroides Si4 was overproduced by constructing a strain that overexpresses the MDH gene and by producing high cell concentrations via fed-batch cultivation in a bioreactor. With the gene of mannitol dehydrogenase (mtlK) cloned into the expression vector pKK223-3 expression of MDH in Escherichia coli was ...
K H, Schneider, F, Giffhorn
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Decolorization of Azo Dyes by Rhodobacter sphaeroides

Biotechnology Letters, 2003
Rhodobacter sphaeroides AS1.1737 decolorized more than 90% of several azo dyes (200 mg dyes l(-1)) in 24 h. The optimal culture conditions were: anaerobic illumination (1990 1x), peptone as carbon source, temperature 35-40 degrees C and pH 7-8. Intracellular crude enzyme from this strain had azoreductase activity, optimized temperature as 45-50 degrees
Zhi-yong, Song, Ji-ti, Zhou, Jing, Wang, Bin, Yan, Cui-hong, Du   +4 more
exaly   +3 more sources

Purification of Fla2 Flagella of Rhodobacter sphaeroides

2017
The photosynthetic bacterium R. sphaeroides expresses two flagellar systems that are encoded by two complete gene clusters that have distinct phylogenetic origins. The isolation and purification of the Filament-Hook Basal Body (F-HBB) or the Hook Basal Body (HBB) structure is a troublesome task given the complexity of this nano-machine that is composed
Javier, de la Mora, Laura, Camarena, Georges, Dreyfus   +2 more
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Gramicidin in chromatophores of Rhodobacter sphaeroides

European Biophysics Journal, 1991
Chromatophores of Rhodobacter sphaeroides were excited with light flashes to generate a transmembrane electrical potential difference. The electric relaxation was measured by electrochromic absorption changes as a function of added gramicidin. At low gramicidin/bacteriochlorophyll (BChl) molar ratios the decay of the electrochromic absorption changes ...
G. Althoff, G. Sch�nknecht, W. Junge
openaire   +1 more source

Positive Photoresponses in Rhodobacter Sphaeroides

1999
Rhodobacter sphaeroides swims using a single, unidirectional flagellum, changing direction by periodically stopping rotation and reorienting during the stops. It shows changes in motile behaviour in response to a wide range of metabolites, to terminal electron acceptors such as oxygen and DMSO and to light.
Judith P. Armitage, Ruslan N. Grishanin, David E. Gauden, Paul A. Hamblin, Simona Romagnoli, Thomas P. Pitta   +5 more
openaire   +1 more source

Production of ubiquinone and bacteriochlorophyll a by Rhodobacter sphaeroides and Rhodobacter sulfidophilus

Journal of Fermentation and Bioengineering, 1993
Abstract Screening was carried out for strains which utilized acetic acid as a sole carbon source and produced large amounts of ubiquinone Q-10 aerobically, and the production of ubiquinone and bacteriochlorophyll a was investigated under different culture conditions.
Teizi Urakami, Takashi Yoshida
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Sensory Signalling in Rhodobacter Sphaeroides

1990
Motile bacteria actively swim about their environment, randomly changing direction every few seconds. When faced with a gradient of a chemical they alter the frequency of direction changing to bias their overall direction towards a favourable environment.
Judith P. Armitage, Philip S. Poole, Simon Brown   +2 more
openaire   +1 more source

Biotransformation of β-amyrin acetate by Rhodobacter sphaeroides

Journal of Bioscience and Bioengineering, 2008
The microbial transformation of beta-amyrin acetate (compound 1) occurred in the culture of Rhodobacter sphaeroides producing three metabolites. The metabolites were purified and identified as beta-amyrin (compound 2), (3beta)-olean-12-ene-3, 23-diol (compound 3), and erythrodiol (compound 4).
Guan-E, Yang, Zhaoming, Zhang, Hongjun, Bai, Jun, Gong, Yufen, Wang, Baozhen, Li, Jiankuan, Li   +6 more
openaire   +2 more sources