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Jinwu He^1,2, Jun Li^1,3, Ru Zhang²

¹Key Laboratory of Genetic Evolution & Animal Models, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China.

Molecular biology and evolution

|January 4, 2024

概括

甲虫生物发光在基因进化驱动下,并行进化了多次. luciferases 中的关键氨基酸变化解释了发光甲虫中的功能差异和颜色变化.

科学领域:

进化生物学是进化的生物学.
生物化学生物化学
基因组学就是基因组学.

背景情况:

甲虫生物发光是令人着迷的,但对其进化起源和功能变异的了解很少.
生物技术中的各种应用突出了研究生物发光甲虫的重要性.

研究的目的:

研究甲虫生物发光的进化起源和功能差异.
为了确定基因和生化机制的底层生物发光进化在elateroidea.

主要方法:

从6个elateroidea家族的发光和非发光甲虫中获得了高质量的参考基因组.
重建了发光和相关非发光家族的遗传关系.
在光酶上进行了比较基因组分析和生化实验.

主要成果:

在Elateroidea中的基因进化对于生物发光起源至关重要,鉴定了多个并行起源.
光酶在光素结合部位显示出不同的发光氨基酸模式 (TSA/CCA/CSA/LVA),与保存的非发光模式 (TLA) 不一样.
氨基酸位点影响了乙烯基-CoA合成酶和光酶活动之间的权衡,生物发光色随着低颜色变化而演变.

结论:

多个并行起源和显著的功能分歧标志着甲虫生物发光的进化.
光酶中的特定氨基酸替代是虫光产生功能和光谱变化的关键驱动因素.

关键词:

生物发光是一种生物发光.酵素性质酵素性质酵素性质光酶是一种光酶.露西弗林结合的部位多个平行起源的多个平行起源.

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