8hfq | pdb_00008hfq

Cryo-EM structure of CpcL-PBS from cyanobacterium Synechocystis sp. PCC 6803

spinqualitylabelsall models 8hfq, resolution 2.64Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 8hfq is a 40 chain structure with sequence from Synechocystis sp. PCC 6803 substr. Kazusa. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 2.64Å Ligands: CYC Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function PHCA_SYNY3 Light-harvesting photosynthetic bile pigment-protein from the phycobiliprotein complex. Publication Abstract from PubMed Phycobilisomes (PBS) are the major light harvesting complexes of photosynthesis in the cyanobacteria and red algae. CpcL-PBS is a type of small PBS in cyanobacteria that transfers energy directly to photosystem I without the core structure. Here we report the cryo-EM structure of the CpcL-PBS from the cyanobacterium Synechocystis sp. PCC 6803 at 2.6-A resolution. The structure shows the CpcD domain of ferredoxin: NADP(+) oxidoreductase is located at the distal end of CpcL-PBS, responsible for its attachment to PBS. With the evidence of ultrafast transient absorption and fluorescence spectroscopy, the roles of individual bilins in energy transfer are revealed. The bilin (1I)beta(82)(2) located near photosystem I has an enhanced planarity and is the red-bilin responsible for the direct energy transfer to photosystem I. Cryo-EM and femtosecond spectroscopic studies provide mechanistic insight into the energy transfer in CpcL-phycobilisomes.,Zheng L, Zhang Z, Wang H, Zheng Z, Wang J, Liu H, Chen H, Dong C, Wang G, Weng Y, Gao N, Zhao J Nat Commun. 2023 Jul 5;14(1):3961. doi: 10.1038/s41467-023-39689-7. PMID:37407580 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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