出芽酵母的代谢驯化综合征。
The metabolic domestication syndrome of budding yeast.
机构信息
Hungarian Centre of Excellence for Molecular Medicine - Biological Research Centre Metabolic Systems Biology Lab, Szeged 6726, Hungary.
Synthetic and System Biology Unit, National Laboratory of Biotechnology, Institute of Biochemistry, Biological Research Centre, Hungarian Research Network, Szeged 6726, Hungary.
出版信息
Proc Natl Acad Sci U S A. 2024 Mar 12;121(11):e2313354121. doi: 10.1073/pnas.2313354121. Epub 2024 Mar 8.
Cellular metabolism evolves through changes in the structure and quantitative states of metabolic networks. Here, we explore the evolutionary dynamics of metabolic states by focusing on the collection of metabolite levels, the metabolome, which captures key aspects of cellular physiology. Using a phylogenetic framework, we profiled metabolites in 27 populations of nine budding yeast species, providing a graduated view of metabolic variation across multiple evolutionary time scales. Metabolite levels evolve more rapidly and independently of changes in the metabolic network's structure, providing complementary information to enzyme repertoire. Although metabolome variation accumulates mainly gradually over time, it is profoundly affected by domestication. We found pervasive signatures of convergent evolution in the metabolomes of independently domesticated clades of . Such recurring metabolite differences between wild and domesticated populations affect a substantial part of the metabolome, including rewiring of the TCA cycle and several amino acids that influence aroma production, likely reflecting adaptation to human niches. Overall, our work reveals previously unrecognized diversity in central metabolism and the pervasive influence of human-driven selection on metabolite levels in yeasts.
细胞代谢通过改变代谢网络的结构和定量状态而进化。在这里,我们通过关注代谢物水平的集合,即代谢组,来探索代谢状态的进化动态,它捕获了细胞生理学的关键方面。我们使用系统发育框架对来自 9 个酿酒酵母物种的 27 个种群中的代谢物进行了分析,在多个进化时间尺度上提供了代谢变化的渐进式视图。代谢物水平的演变比代谢网络结构的变化更快且更独立,为酶谱提供了补充信息。尽管代谢组的变化主要随着时间的推移而逐渐积累,但它受到驯化的深刻影响。我们在独立驯化的酵母属的分支中发现了代谢组中普遍存在的趋同进化的特征。野生和驯化群体之间反复出现的代谢物差异影响了相当一部分代谢组,包括 TCA 循环和几种影响香气产生的氨基酸的重新布线,这可能反映了对人类小生境的适应。总的来说,我们的工作揭示了中央代谢中以前未被识别的多样性,以及人类驱动的选择对酵母中代谢物水平的普遍影响。