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在Corynebacterium glutamicum中EMP和HMP通路的酶动态的表征:用于建模代谢网络的参考

Liu Yang¹, Junyi Li¹, Yaping Zhang¹

¹Guangdong Key Laboratory of Fermentation and Enzyme Engineering, School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China.

Frontiers in bioengineering and biotechnology

|December 13, 2023

概括

这项研究确定了Corynebacterium glutamicum中EMP和HMP通路的关键酶动态参数. 这些数据对于构建代谢模型和理解细胞代谢至关重要.

科学领域:

代谢工程是代谢工程.
生物化学生物化学
系统生物学系统生物学

背景情况:

细胞内代谢网络模型对于理解Corynebacterium glutamicum的代谢至关重要.
准确的模型需要广泛的酶学参数,这些参数以前缺乏关键途径.

研究的目的:

在Corynebacterium glutamicum中系统地确定12种参与EMP和HMP通路的酶的动态参数.
为构建一个全面的代谢网络模型提供基础数据.

主要方法:

克隆的基因编码EMP和HMP通路酶来自Corynebacterium glutamicumATCC 13032.2.
使用大肠杆菌和P. pastoris表达系统,表达和净化了12种酶.
在一致条件下测量和计算动力参数 (Vmax,Km和Kcat).

主要成果:

成功表达和净化了十二种活性酶:GLK,GPI,TPI,GAPDH,PGK,PMGA,ENO,ZWF,RPI,RPE,TKT和TAL.这些酶的活性酶包括GLK,GPI,TPI,GAPDH,PGK,PMGA,ENO,ZWF,RPI,RPE,TKT和TAL.
首次在C. glutamicum中全面和系统地确定了这些酶的动态参数.
确定了EMP和HMP代谢途径中的关键酶和速度限制步骤.

结论:

确定的运动参数对于构建C. glutamicum的精确代谢网络模型至关重要.
这些模型将增强对C. glutamicum代谢行为的理解.
这些发现支持使用C. glutamicum优化高价值化学品的生产.

关键词:

在Corynebacterium glutamicum的研究中,我们发现电磁 EMP 路径的路径.在HMP路径中,HMP路径是:酶动力学参数的参数代谢网络模型的代谢网络模型

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