Bioreactor Engineering Research and Industrial Applications by Qin Ye, Jie Bao, Jian-Jiang Zhong

Chemical Engineering

By Qin Ye, Jie Bao, Jian-Jiang Zhong

This publication overview sequence provides present developments in smooth biotechnology. the purpose is to hide all elements of this interdisciplinary expertise the place wisdom, tools and services are required from chemistry, biochemistry, microbiology, genetics, chemical engineering and computing device technological know-how. Volumes are prepared topically and supply a complete dialogue of advancements within the respective box during the last 3-5 years. The sequence additionally discusses new discoveries and functions. certain volumes are devoted to chosen issues which concentrate on new biotechnological items and new procedures for his or her synthesis and purification. in most cases, exact volumes are edited by way of recognized visitor editors. The sequence editor and writer will despite the fact that continually be happy to obtain feedback and supplementary info. Manuscripts are accredited in English.

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Additional resources for Bioreactor Engineering Research and Industrial Applications I: Cell Factories

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J Mol Microbiol Biotechnol 13:1–11 54. Valgepea K, Adamberg K, Vilu R (2011) Decrease of energy spilling in Escherichia coli continuous cultures with rising specific growth rate and carbon wasting. BMC Syst Biol 5:106 55. Kayser A, Weber J, Hecht V, Rinas U (2005) Metabolic flux analysis of Escherichia coli in glucose-limited continuous culture. I. Growth-rate dependent metabolic efficiency at steady state. Microbiology 151:693–706 56. Wolfe AJ (2005) The acetate switch. Microbiol Mol Biol Rev 69:12–50 57.

Under Slimitation, the concentrations of sulfide and APS decrease, while N-acetylserine pool increases. The two regulators CysB and Cbl mediate homeostatic responses to S-limitation, where these responses help E. coli to scavenge trace amounts of cysteine and sulfate, preferred S sources, or the alternative S sources such as glutathione and various alkaline sulfonate including taurine. S-limitation affects methionine metabolism, synthesis of FeS clusters, and oxidative stress. Like NtrC for N-regulation, CysB is the primary regulator for homeostatic responses to S, and it is required for the synthesis of Cbl [162].

It is important to get deep insight into the whole cellular metabolic systems not only by molecular biology and biochemistry, but also by systems biology approach, and apply this for the efficient metabolic engineering. Among intracellular metabolites, α-ketoacids such as αKG, OAA, and PYR turn to be mater regulators for catabolite regulation and coordination of different regulations [299]. Namely, when favoured carbon sources are depleted, α-ketoacid levels fall, and cAMP increases to stimulate other carbon catabolite machinery.

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