The structure of Photosystem I acclimated to far-red light illuminates an ecologically important acclimation process in photosynthesis
Journal
Science Advances
Journal Volume
6
Journal Issue
6
Date Issued
2020
Author(s)
Gisriel, C.
Shen, G.
Kurashov, V.
Ho, M.-Y.
Zhang, S.
Williams, D.
Golbeck, J.H.
Fromme, P.
Bryant, D.A.
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.
Type
journal article