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The amino acid L-proline can be incorporated into proteins and peptides but it can also be degraded as a carbon, nitrogen, and energy source. In aerobic bacteria, L-proline catabolism most often involves the membrane-associated FAD-containing enzyme L-proline dehydrogenase which donates electrons directly …
The human gastrointestinal tract consists of several discrete compartments including the stomach, small intestine, and large intestine or colon. Each of these structures has its own microenvironment and microbiota and can contribute in different ways to normal nitrogen metabolism. One important metabolite …
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Catabolism of the amino acid L-proline in most Gram-positive bacteria occurs through through a common pathway that involves the FAD-dependent activity L-proline dehydrogenase (PRODH) and the NAD+-dependent activity L-Δ1-pyrroline-5-carboxylate dehydrogenase (P5CDH). The two activities are found in monofunctional proteins in the low …
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The amino acid L-proline can be degraded to L-glutamate by many Gram-positive bacteria through a common pathway that uses the FAD-dependent activity L-proline dehydrogenase (PRODH) and the NAD+-dependent activity L-Δ1-pyrroline-5-carboxylate dehydrogenase (P5CDH), also called L-glutamate-γ-semialdehyde dehydrogenase (GSALDH).) The aim of this review …
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Extracts of the low-lying shrub Arctostaphylos uva-ursi, which is commonly referred to as “bearberry” or simply as Uva ursi, have been widely promoted and frequently used as an herbal treatment for urinary tract infections. These extracts contain a wide range of organic …
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To help students in a college-level cell biology course develop their technical vocabulary and scientific literacy, a series of fill-in-the blank texts were developed based on figures or diagrams taken from the class textbook, Power Point presentations, or the internet. Each figure …
Escherichia coli is a facultative anaerobe that occurs in the gastrointestinal and urinary systems where the pO2 can vary. Strain BW25113 and mutants with deletions of the put A, put P, pro P, and pro W genes were grown in a minimal …
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The genus Gracilibacillus includes over 20 species of halophilic bacteria which have been isolated from salterns, saline lakes or soils, plants, or animals and can grow in media containing 0.5% to 20% NaCl. The bacteria are Gram-positive motile thin rods or filaments …
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As students move through a college science curriculum, expectations for their performance increase as they transition from one level of Bloom’s taxonomy to another. To help students in a one-semester biochemistry course better understand the relationships between different topics and improve their …
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Anuradha Balasubramanian, Stefano Benini, Alfred Botha, Célia R. Carlini et autres
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Three transport systems have been implicated in the uptake of L-proline by the Gram-negative bacterium Escherichia coli. A triple mutant containing deletions of the putP, proP, and proW genes was constructed from strain BW25113 of the Keio collection. This mutant still grew …
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