首页|从碳代谢流角度新解代谢工程策略

从碳代谢流角度新解代谢工程策略

扫码查看
代谢工程通过改造微生物代谢过程,进而利用微生物生产各种有用的医药、化学产品及工业原料.本文从细胞代谢中碳代谢流的角度入手,将代谢工程的传统与新型策略进行分类解析.其中,传统代谢工程手段主要对目标代谢路径的关键酶进行改造,通过过表达或基因敲除增大目的代谢路径碳代谢流.然而,在代谢路径改造需要进行多基因表达的情况下,传统手段在如何最佳表达多种酶使碳流通畅上会受到很大限制.本文提出利用高碳流路径,通过简单基因改造以获得高效目标产物生产的新策略.同时,随着合成生物学与系统生物学的发展,精细调控多基因表达成为可能.本文进一步举例讨论了代谢工程中粗略与精细调控基因表达水平对碳流的影响,以期对教学与前沿科研有助.
Hijacking high-flux metabolic pathways to enhance product yield in metabolic engineering
Metabolic engineering can alter metabolic processes through genetic manipulation and enzyme engineering.Metabolic engineering is widely used to produce useful compounds in pharmaceutical and chemical industries.In this context,we recategorize metabolic engineering strategies based on carbon flux.Traditional metabolic engineering strategy focuses on overexpressing or knocking out key enzymes to channel carbon flux toward the end product.However,this traditional strategy is limited when multiple bottleneck genes are involved,in which balancing gene expression often determines the efficiency of carbon flux.Here we summerize several recent research,and show the advantage of utilizing high-flux metabolic pathways as a new strategy to achieve high productivity.In addition,we also discuss the importance of fine-tuning gene expression in metabolic engineering to channel carbon flux more efficiently.

metabolic engineeringcarbon fluxmicrobiologybiofuel

郑艺、王志鹏、王鑫、黄炎和、林金石

展开 >

福建农林大学资源与环境学院,福州350002

Department of Chemistry, Texas A&M University, College Station TX 77840, USA

Department of Plant Pathology and Microbiology, Texas A&M University, College Station TX 77843, USA

代谢工程 碳流 微生物 生物能源

国家科学支撑计划福建省自然科学基金

2014BAD15B03032015J01156

2017

中国科学(生命科学)
中国科学院

中国科学(生命科学)

CSTPCDCSCD北大核心
影响因子:0.725
ISSN:1674-7232
年,卷(期):2017.47(3)
  • 6