Under high irradiance, light becomes dangerous for photosynthetic organisms and they
must protect themselves. Cyanobacteria have developed a simple mechanism, involving a …

Contents Summary 937 I. Introduction 937 II. The structure of the OCP 938 III. OCP function
939 IV. Distribution of OCPs, FRP and domains in cyanobacteria 943 V. Carotenoid–protein …

Abstract The Orange Carotenoid Protein (OCP) is a unique photoreceptor crucial for
cyanobacterial photoprotection. Best studied Synechocystis sp. PCC 6803 OCP belongs to …

Here, we propose a possible photoactivation mechanism of a 35-kDa blue light-triggered
photoreceptor, the Orange Carotenoid Protein (OCP), suggesting that the reaction involves …

Carotenoids are lipophilic substances with many biological functions, from coloration to
photoprotection. Being potent antioxidants, carotenoids have multiple biomedical …

Cyanobacteria are photosynthesizing prokaryotes responsible for the Great Oxygenation
Event on Earth~ 2.5 Ga years ago. They use a specific photoprotective mechanism based on …

Photoprotection is essential for efficient photosynthesis. Cyanobacteria have evolved a
unique photoprotective mechanism mediated by a water-soluble carotenoid-based …

Abstract The 35-kDa Orange Carotenoid Protein (OCP) is responsible for photoprotection in
cyanobacteria. It acts as a light intensity sensor and efficient quencher of phycobilisome …

The orange carotenoid protein (OCP) is a structurally and functionally modular photoactive
protein involved in cyanobacterial photoprotection. Using phylogenomic analysis, we have …

The photoswitchable orange carotenoid protein (OCP) is indispensable for cyanobacterial
photoprotection by quenching phycobilisome fluorescence upon photoconversion from the …