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Metabolic Pathway Analysis of Glycerol Metabolism in Klebsiella pneumoniae Incorporating Oxygen Regulatory System

机译:肺炎克雷伯菌结合氧气调节系统中甘油代谢的代谢途径分析

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It is well known that environmental and genetic perturbations have major effects on the metabolic behavior of cells.In this work,a model that utilizes existing knowledge of oxygen and redox sensing/regulatory system to assist elementary flux modes(EFMs)has been developed and was carried out to predict the metabolic potential of Klebsiella pneumoniae for the production of 1,3-propanediol(1,3-PD)under anaerobic and aerobic conditions.It was found that the theoretical optimal 1,3-PD yield could reach to 0.844 mol mol~(-1)if the pentose phosphate pathway(PPP),and transhydrogenase had a high flux under anaerobic condition.However,PPP had little influence on the theoretical 1,3-PD yield,and the flux through tricarboxylic acid(TCA)cycle was high under aerobic conditions.In addition,the effect of oxygen level on the 1,3-PD and biomass was further analyzed.
机译:众所周知,环境和遗传扰动会对细胞的代谢行为产生重大影响。在这项工作中,已经开发出了一个模型,该模型利用氧气和氧化还原感测/调节系统的现有知识来辅助基本通量模式(EFM)。进行了预测在厌氧和有氧条件下肺炎克雷伯菌产生1,3-丙二醇(1,3-PD)的代谢潜能的研究,发现理论上1,3-PD的最佳产量可达0.844 mol mol〜(-1)表示戊糖磷酸途径(PPP)和转氢酶在厌氧条件下具有较高的通量,但是,PPP对理论1,3-PD收率和三羧酸通量的影响很小有氧条件下的循环周期较高。此外,进一步分析了氧水平对1,3-PD和生物量的影响。

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