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

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.

Who's your neighbor? Suggesting alternative assemblies of E/F type bilin lyases from crystal lattice analysis.

Attachment of bilins to phycobiliproteins is performed by dedicated lyases. In this issue of Structure, Kumarapperuma et al., 2022 present the structure of an E/F type lyase-isomerase that identifies the correct biological interface between active domains, suggesting that a previous E/F lyase misidentified the heterodimer structure from the crystal lattice.