Investigation of phycobilisome subunit interaction interfaces by coupled cross-linking and mass spectrometry.

ABSTRACT: The phycobilisome (PBS) is an extremely large light-harvesting complex, common in cyanobacteria and red algae, composed of rods and core substructures. These substructures are assembled from chromophore-bearing phycocyanin and allophycocyanin subunits, nonpigmented linker proteins and in some cases additional subunits. To date, despite the determination of crystal structures of isolated PBS components, critical questions regarding the interaction and energy flow between rods and core are still unresolved. Additionally, the arrangement of minor PBS components located inside the core cylinders is unknown. Different models of the general architecture of the PBS have been proposed, based on low resolution images from electron microscopy or high resolution crystal structures of isolated compone

SUBMITTER: Tal O 

PROVIDER: S-EPMC4246069 | biostudies-literature | 2014 Nov

REPOSITORIES: biostudies-literature