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Robustness and Plasticity of Metabolic Pathway Flux among Uropathogenic Isolates of Pseudomonas aeruginosa (2014)

by A Berger, K Dohnt, P Tielen, D Jahn, J Becker, C Wittmann
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Bacterial Symbioses and the Innate Immune Response of the Model Host: Euprymna scolopes

by Andrew J. Collins, Andrew Collins
"... All animals enter into beneficial relationships with bacteria. The light organ of the Hawaiian Bobtail squid, Euprymna scolopes, is a unique model for studying the establishment and maintenance of a symbiosis between a host and a single bacterial species, Vibrio fischeri. This bacterium inhabits a s ..."
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All animals enter into beneficial relationships with bacteria. The light organ of the Hawaiian Bobtail squid, Euprymna scolopes, is a unique model for studying the establishment and maintenance of a symbiosis between a host and a single bacterial species, Vibrio fischeri. This bacterium inhabits a specialized structure known as the light organ and provides counter-illumination to mask the silhouette of the predator as it hunts for food during the night. Hemocytes, the primary innate immune cells, preferentially bind and phagocytose non-symbiotic at higher rates than their symbiont, but this can change with the colonization state of the animal. A goal of this work was to use high-throughput sequencing to identify genes expressed within hemocytes of adult animals. Of the many genes identified was a novel peptidoglycan recognition protein, EsPGRP5, which is one of the most abundant transcripts in circulating hemocytes. In addition to the light organ, female squid have an accessory nidamental gland (ANG) which contributes to making the jelly coat that covers the squid’s eggs. This gland is full of epithelium-lined tubules, most of which support a dense population of bacteria. Unlike the light organ however, the bacterial population in the ANG is a
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...-phosphogluconatesdehydrogenase.sAs an alternative metabolic pathway, 6-phosphogluconate produced bysthe first two enzymes of the pentose phosphate pathway could feed into the EntnerDoudoroff pathway =-=(180, 181)-=-.sWhile the Roseobacter clade was originally described as a group of obligatelysaerobic organisms, recently it has been shown that some members contain enzymessneeded for anaerobic respiration of nitr...

RESEARCH ARTICLE Elementary Flux Mode Analysis Revealed Cyclization Pathway as a Powerful Way for NADPH Regeneration of Central Carbon Metabolism

by Bin Rui, Yin Yi, Tie Shen, Meijuan Zheng, Wenwei Zhou, Honglin Du, Yadong Fan, Zhengdong Zhang, Shengsheng Xu, Zhijie Liu, Xiaoyao Xie
"... ☯ These authors contributed equally to this work. ..."
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☯ These authors contributed equally to this work.
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...on metabolism flux completely transferred from the EMP pathway to G6PDH. Moreover, most 6-phospho-D-glucono-1,5-lactone entered the ED pathway after G6PDH, rather than through the non-oxidative branch=-=[41]-=-. This situation is actually a combination of PP-ED-EMP cycles and the distribution of metabolic fluxes under normal conditions. Meanwhile, Lien et al. found by 13C-fluxomcis that Pseudomonas fluoresc...

ORIGINAL RESEARCH ARTICLE

by Andrew J. Collins, Matthew S. Fullmer, Johann P. Gogarten, Spencer V. Nyholm, Wesley Douglas Swingley, Spencer V. Nyholm , 2015
"... doi: 10.3389/fmicb.2015.00123 Comparative genomics of Roseobacter clade bacteria isolated from the accessory nidamental gland of Euprymna scolopes ..."
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doi: 10.3389/fmicb.2015.00123 Comparative genomics of Roseobacter clade bacteria isolated from the accessory nidamental gland of Euprymna scolopes
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...metabolic pathway, 6-phosphogluconate produced by the first two enzymes of the pentose phosphate pathway could feed into the Entner–Doudoroff pathway for further carbohydrate metabolism (Fuchs, 1999; =-=Berger et al., 2014-=-). While the Roseobacter clade was first described as a group of obligate aerobic organisms, recently it has been shown that some members contain enzymes needed for anaerobic respiration of nitrate (D...

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