Core Viewpoint - The research published in Science reveals the three-dimensional structure of the PSI-FCPI supercomplex from Emiliania huxleyi, highlighting its unique adaptation strategies to marine light environments and its significance in the study of evolutionary mechanisms in photosynthetic organisms [2][3]. Group 1: Research Findings - The research team successfully purified and analyzed the PSI-FCPI supercomplex, providing insights into how coccolithophores adapt their photosystems to varying light conditions in the ocean [3][8]. - The PSI-FCPI supercomplex consists of 12 core PSI subunits, a specific linker protein, and 38 peripheral antenna proteins, making it the largest known PSI-antenna supercomplex [9]. - The structural analysis revealed a complex pigment network that includes 411 chlorophyll a, 152 chlorophyll c, and 256 carotenoids, which enhances the efficiency of light capture and energy transfer [9][12]. Group 2: Efficiency and Performance - The overall excitation capture time of the Eh-PSI-FCPI supercomplex is measured at 96-120 picoseconds, indicating a quantum conversion efficiency of approximately 95% [10]. - The supercomplex's light capture cross-section is expanded by 4-5 times compared to terrestrial plants, yet it maintains a high quantum conversion efficiency, demonstrating its effectiveness in energy conversion [12].