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Article
The role of the local environment on the structural heterogeneity of carotenoid β-ionone rings
Our analysis of the X-ray crystal structure of canthaxanthin (CAN) showed that its ketolated β-ionone rings can adopt two energetically equal, but structurally distinct puckers. Quantum chemistry calculations ...
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Article
Coupled rows of PBS cores and PSII dimers in cyanobacteria: symmetry and structure
Phycobilisome (PBS) is a giant water-soluble photosynthetic antenna transferring the energy of absorbed light mainly to the photosystem II (PSII) in cyanobacteria. Under the low light conditions, PBSs and PSII...
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Article
Assembly of photoactive orange carotenoid protein from its domains unravels a carotenoid shuttle mechanism
The photoswitchable orange carotenoid protein (OCP) is indispensable for cyanobacterial photoprotection by quenching phycobilisome fluorescence upon photoconversion from the orange OCPO to the red OCPR form. Cyan...
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Article
Electronic coupling of the phycobilisome with the orange carotenoid protein and fluorescence quenching
Using computational modeling and known 3D structure of proteins, we arrived at a rational spatial model of the orange carotenoid protein (OCP) and phycobilisome (PBS) interaction in the non-photochemical fluor...