Molecular Evolution of Far-Red Light-Acclimated Photosystem II.

ABSTRACT: Cyanobacteria are major contributors to global carbon fixation and primarily use visible light (400-700 nm) to drive oxygenic photosynthesis. When shifted into environments where visible light is attenuated, a small, but highly diverse and widespread number of cyanobacteria can express modified pigments and paralogous versions of photosystem subunits and phycobiliproteins that confer far-red light (FRL) absorbance (700-800 nm), a process termed far-red light photoacclimation, or FaRLiP. During FaRLiP, alternate photosystem II (PSII) subunits enable the complex to bind chlorophylls d and f, which absorb at lower energy than chlorophyll a but still support water oxidation. How the FaRLiP response arose remains poorly studied. Here, we report ancestral sequence reconstruc

SUBMITTER: Gisriel CJ 

PROVIDER: S-EPMC9325196 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature