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Crassulacean Acid Metabolism
Crassulacean acid metabolism (CAM) represents one of the best-studied metabolic examples of an ecological adaptation to environmental stress. Well over 5 % of all vascular plant species engage in this water-conserving photosynthetic pathway. Intensified research activities over the last 10 years have led to major advances in understanding the biology of CAM plants. New areas of research reviewed in detail in this book include regulation of gene expression and the molecular basis of CAM, the ecophysiology of CAM plants from tropical environments, the productivity of agronomically important cacti and agaves, the ecophysiology of CAM in submerged aquatic plants, and the taxonomic diversity and evolutionary origins of CAM.
Proof of an Outer Membrane Target of the Efflux Inhibitor Phe-Arg-[beta]-naphthylamide from Random Mutagenesis
Abstract: Phe-Arg-[beta]-naphthylamide (PA[beta]N) has been characterized as an efflux pump inhibitor (EPI) acting on the major multidrug resistance efflux transporters of Gram-negative bacteria, such as AcrB in Eschericha coli. In the present study, in vitro random mutagenesis was used to evolve resistance to the sensitizing activity of PA[beta]N with the aim of elucidating its mechanism of action. A strain was obtained that was phenotypically similar to a previously reported mutant from a serial selection approach that had no efflux-associated mutations. We could confirm that acrB mutations in the new mutant were unrelated to PA[beta]N resistance. The next-generation sequencing of the two ...
Transfer RNA
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Morte sotto spirito
Rientrata a casa per assistere la madre con una gamba rotta, Katharina Schweitzer si ritrova suo malgrado ai fornelli della locanda di famiglia nella Foresta Nera. Nel frattempo nella valle infuria la protesta contro una pista di sci poco ecologica. Quando l'ambientalista Konrad Hils viene ritrovato morto, Katharina, pungolata dall'immancabile amica Adela, metterà da parte il grembiule e con la sua Panda scoppiettante andrà a caccia dei colpevoli.
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