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《科学》 第391卷 第6789期 · 2026年3月5日 · 中文解读

角苔中一种非典型Rubisco小亚基驱动CO2浓缩细胞器的形成

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本文报道了角苔中一种具有C端延伸的非典型Rubisco小亚基RbcS-STAR,其通过卷曲螺旋结构域寡聚化介导Rubisco凝聚,并在缺乏蛋白核的物种中足以诱导类蛋白核凝聚体的形成。
原文开头
An unconventional Rubisco small subunit underpins the CO2-concentrating organelle in land plants Tanner A. Robison1,2†, Yuwei Mao3,4†, Zhen Guo Oh2†*, Warren S. L. Ang1†, Dan Hong Loh2, Yu-Heng Hsieh1,5, Maddie Ceminsky5, Nicky Atkinson3,4, Declan Lafferty1, Xia Xu1, Laura H. Gunn2*, Alistair J. McCormick3,4*, Fay-Wei Li1,2* In many algae, photosynthesis is boosted by biophysical CO2- concentrating mechanisms, which pack the CO2-fixing enzyme Rubisco into liquid-like organelles called pyrenoids. Engineering C3 crops with algal pyrenoids could increase yields, but progress is hampered by the deep evolutionary divide between crops and algae. Here, we show that hornworts, the only land plants with pyrenoids, have an unusual Rubisco small subunit, RbcS-STAR, the C-terminal coiled-coil domain of which oligomerizes to mediate Rubisco condensation. …
摘自《科学》(Science)第391卷 第6789期 · 2026年3月5日。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。
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