Results 31 to 40 of about 198,573 (295)

The structural basis of light‐harvesting in purple bacteria [PDF]

FEBS Letters, 2003
A typical purple bacterial photosynthetic unit consists of two types of light‐harvesting complex (LH1 and LH2) together with a reaction centre. This short review presents a description of the structure of the LH2 complex from Rhodopseudomonas acidophila, which has recently been improved to a resolution of 2.0 Å [Papiz et al., J. Mol. Biol.
Cogdell, Richard J., Isaacs, Neil W., Freer, Andrew A., Howard, Tina D., Gardiner, Alastair T., Prince, Steve M.; id_orcid 0000-0003-0929-0254, Papiz, Miroslavr Z.   +6 more
openaire   +2 more sources

Phototropic sulfur and sulfate-reducing bacteria in the chemocline of meromictic Lake Cadagno, Switzerland

Journal of Limnology, 2004
Lake Cadagno, a crenogenic meromictic lake located in the catchment area of a dolomite vein rich in gypsum in the Piora Valley in the southern Alps of Switzerland, is characterized by a compact chemocline with high concentrations of sulfate, steep ...
Raffaele PEDUZZI, Dittmar HAHN, Antonella DEMARTA, Sandro PEDUZZI, Mauro TONOLLA   +4 more
doaj   +1 more source

New Approach for the Construction and Calibration of Gas-Tight Setups for Biohydrogen Production at the Small Laboratory Scale

Metabolites, 2021
Biohydrogen production in small laboratory scale culture vessels is often difficult to perform and quantitate. One problem is that commonly used silicon tubing and improvised plastic connections used for constructing apparatus are cheap and easy to ...
Caroline Autenrieth, Shreya Shaw, Robin Ghosh   +2 more
doaj   +1 more source

A new purple sulfur bacterium from saline littoral sediments, Thiorhodotvibrio winogradskyi gen. nov. and sp. nov. [PDF]

, 1992
Two strains of a new purple sulfur bacterium were isolated in pure culture from the littoral sediment of a saline lake (Mahoney Lake, Canada) and a marine microbial mat from the North Sea island of Mellum, respectively.
Fischer, Ulrich, Overmann, Jörg, Pfennig, Norbert   +2 more
core   +1 more source

Photosynthesis Is Widely Distributed among Proteobacteria as Demonstrated by the Phylogeny of PufLM Reaction Center Proteins

Frontiers in Microbiology, 2018
Two different photosystems for performing bacteriochlorophyll-mediated photosynthetic energy conversion are employed in different bacterial phyla. Those bacteria employing a photosystem II type of photosynthetic apparatus include the phototrophic purple ...
Johannes F. Imhoff, Tanja Rahn, Sven Künzel, Sven C. Neulinger   +3 more
doaj   +1 more source

Effects of nitrogen fertilizers on the bacterial community diversity and the weathering of purple mudstone in Southwest China

Frontiers in Microbiology, 2023
IntroductionRock weathering is crucial in the development of soil. Yet the role of bacteria in the fine particle-forming process of purple mudstone is not fully understood, especially under nitrogen fertilization.MethodsIn this study, the particles (0.25 
Chunpei Li, Maopan Fan, Xuan Wang, Xuan Wang, Xue Li, Guang Zhao, Gangcai Liu, Jixia Zhao   +7 more
doaj   +1 more source

Candidate strains of photosynthetic purple bacteria. [PDF]

, 2016
Candidate strains of photosynthetic purple bacteria.
Kumiko Morisaki (1626211), Keiji Numata (1443298), Kiminori Toyooka (454239), Mieko Higuchi-Takeuchi (2938461)   +3 more
core   +1 more source

Phytoremediation and purple non sulfur bacteria [PDF]

, 2021
Microorganisms are vital for agriculture as they possess biochemical reactions required for the quality and productivity of agricultural soils. Bacteria are the most diverse and intense group of microorganims and essential members of soil microorganisms ...
Gürgan, Muazzez, Adiloğlu, Sevinç
core  

Purple urine bag syndrome in an elderly patient from Colombia

Journal of Infection in Developing Countries, 2015
A 71-year-old woman in a nursing home, with indwelling urinary catheter, bedridden, presented with a purple urine collector bag. The purple urine bag syndrome is a rare condition associated with the metabolism of tryptophan by overgrowth of intestinal ...
Alvaro Mondragón-Cardona, Carlos Eduardo Jiménez-Canizales, Verónica Alzate-Carvajal, Fabricio Bastidas-Rivera, Juan Carlos Sepúlveda-Arias   +4 more
doaj   +1 more source

Metabolite Profiling Analysis and the Correlation with Biological Activity of Betalain-Rich Portulaca grandiflora Hook. Extracts

Antioxidants, 2022
The aim of the study was to evaluate the possible correlation between the bioactivity and the phytochemical profile of four betalain-rich extracts from Portulaca grandiflora Hook. The HPLC-DAD-ESI-MS analysis indicated the presence of 19 betaxanthins and
Aneta Spórna-Kucab, Anna Tekieli, Agnieszka Grzegorczyk, Łukasz Świątek, Barbara Rajtar, Krystyna Skalicka-Woźniak, Karolina Starzak, Boris Nemzer, Zbigniew Pietrzkowski, Sławomir Wybraniec   +9 more
doaj   +1 more source