Allosteric Effectors Outcompete Transcript Levels and Substrate Concentration in Regulating Central Carbon Flux During the Crabtree Effect Transition

IF 3.2 3区 生物学 Q2 BIOCHEMICAL RESEARCH METHODS
Min Chen, Junfeng Jiang, Tingting Xie, Yingping Zhuang, Jianye Xia
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Abstract

While the metabolic shift in Saccharomyces cerevisiae across the Crabtree effect is well-documented, the role of allosteric regulation in this transition remains unclear. Here, we investigated allosteric regulation by inducing a growth rate shift from 0.2 to 0.35 h. Our results revealed 35 regulatory interactions across 23 central carbon metabolism reactions, with allosteric effectors explaining 29% of flux changes—surpassing the contributions of transcript abundance and substrate concentration. Additionally, key Crabtree-responsive reactions' flux changes were co-regulated by allosteric effectors, transcript abundance, and enzyme turnover numbers. These underscore the significance of allosteric regulation in metabolic adaptation during growth rate transitions in Saccharomyces cerevisiae.

Abstract Image

在Crabtree效应转变过程中,变构效应在调节中心碳通量方面胜过转录物水平和底物浓度
虽然酿酒酵母在Crabtree效应中的代谢转变已被充分记录,但变构调节在这一转变中的作用仍不清楚。在这里,我们通过诱导生长速率从0.2到0.35 h的变化来研究变构调节。我们的结果揭示了23个中心碳代谢反应中的35个调节相互作用,其中变构效应解释了29%的通量变化,超过了转录物丰度和底物浓度的贡献。此外,关键的crabtree响应反应的通量变化受变构效应、转录物丰度和酶周转数的共同调节。这些都强调了变构调节在酿酒酵母生长速率转变过程中代谢适应的重要性。
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来源期刊
Biotechnology Journal
Biotechnology Journal Biochemistry, Genetics and Molecular Biology-Molecular Medicine
CiteScore
8.90
自引率
2.10%
发文量
123
审稿时长
1.5 months
期刊介绍: Biotechnology Journal (2019 Journal Citation Reports: 3.543) is fully comprehensive in its scope and publishes strictly peer-reviewed papers covering novel aspects and methods in all areas of biotechnology. Some issues are devoted to a special topic, providing the latest information on the most crucial areas of research and technological advances. In addition to these special issues, the journal welcomes unsolicited submissions for primary research articles, such as Research Articles, Rapid Communications and Biotech Methods. BTJ also welcomes proposals of Review Articles - please send in a brief outline of the article and the senior author''s CV to the editorial office. BTJ promotes a special emphasis on: Systems Biotechnology Synthetic Biology and Metabolic Engineering Nanobiotechnology and Biomaterials Tissue engineering, Regenerative Medicine and Stem cells Gene Editing, Gene therapy and Immunotherapy Omics technologies Industrial Biotechnology, Biopharmaceuticals and Biocatalysis Bioprocess engineering and Downstream processing Plant Biotechnology Biosafety, Biotech Ethics, Science Communication Methods and Advances.
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