The structure of Photosystem I acclimated to far-red light illuminates an ecologically important acclimation process in photosynthesis
Christopher J. Gisriel, Gaozhong Shen, Vasily Kurashov, Ming‐Yang Ho, Shangji Zhang, Dewight Williams, John H. Golbeck, Petra Fromme, Donald A. Bryant
Abstract
PCC 7521 by single-particle, cryo-electron microscopy to understand its structural and functional differences. Four binding sites occupied by chlorophyll f are proposed. Subtle structural changes enable FRL-adapted PSI to extend light utilization for oxygenic photosynthesis to nearly 800 nm. This structure provides a platform for understanding FRL-driven photosynthesis and illustrates the robustness of adaptive and acclimation mechanisms in nature.
Topics & Concepts
PhotosynthesisPhototrophPhotosystem IIPhotosystem IAcclimatizationCyanobacteriaBiophysicsBiologyChlorophyllBotanyChloroplastP700BiochemistryBacteriaGeneGeneticsPhotosynthetic Processes and MechanismsPhotoreceptor and optogenetics researchLight effects on plants