Characterization of cyanobacterial allophycocyanins absorbing far-red light
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ORIGINAL ARTICLE
Characterization of cyanobacterial allophycocyanins absorbing far‑red light Nathan Soulier1 · Tatiana N. Laremore2 · Donald A. Bryant1,3 Received: 13 May 2020 / Accepted: 15 July 2020 © Springer Nature B.V. 2020
Abstract Phycobiliproteins (PBPs) are pigment proteins that comprise phycobilisomes (PBS), major light-harvesting antenna complexes of cyanobacteria and red algae. PBS core substructures are made up of allophycocyanins (APs), a subfamily of PBPs. Five paralogous AP subunits are encoded by the Far-Red Light Photoacclimation (FaRLiP) gene cluster, which is transcriptionally activated in cells grown in far-red light (FRL; λ = 700 to 800 nm). FaRLiP gene expression enables some terrestrial cyanobacteria to remodel their PBS and photosystems and perform oxygenic photosynthesis in far-red light (FRL). Paralogous AP genes encoding a putative, FRL-absorbing AP (FRL-AP) are also found in an operon associated with improved lowlight growth (LL;
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