The structural basis for light acclimation in phycobilisome light harvesting systems systems in Porphyridium purpureum.

ABSTRACT: Photosynthetic organisms adapt to changing light conditions by manipulating their light harvesting complexes. Biophysical, biochemical, physiological and genetic aspects of these processes are studied extensively. The structural basis for these studies is lacking. In this study we address this gap in knowledge by focusing on phycobilisomes (PBS), which are large structures found in cyanobacteria and red algae. In this study we focus on the phycobilisomes (PBS), which are large structures found in cyanobacteria and red algae. Specifically, we examine red algae (Porphyridium purpureum) grown under a low light intensity (LL) and a medium light intensity (ML). Using cryo-electron microscopy, we resolve the structure of ML-PBS and compare it to the LL-PBS structure. The ML-PBS is 13.6 MDa, whil

SUBMITTER: Dodson EJ 

PROVIDER: S-EPMC10682464 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature