6uzv

The structure of a red shifted photosystem I complexThe structure of a red shifted photosystem I complex

Structural highlights 6uzv is a 30 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 3.1Å Ligands: , , , , , , Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function PSAD_SYNY3 Publication Abstract from PubMed Photosystem I coordinates more than 90 chlorophylls in its core antenna while achieving near perfect quantum efficiency. Low energy chlorophylls (also known as red chlorophylls) residing in the antenna are important for energy transfer dynamics and yield, however, their precise location remained elusive. Here, we construct a chimeric Photosystem I complex in Synechocystis PCC 6803 that shows enhanced absorption in the red spectral region. We combine Cryo-EM and spectroscopy to determine the structure(-)function relationship in this red-shifted Photosystem I complex. Determining the structure of this complex reveals the precise architecture of the low energy site as well as large scale structural heterogeneity which is probably universal to all trimeric Photosystem I complexes. Identifying the structural elements that constitute red sites can expand the absorption spectrum of oxygenic photosynthetic and potentially modulate light harvesting efficiency. The structure of a red-shifted photosystem I reveals a red site in the core antenna.,Toporik H, Khmelnitskiy A, Dobson Z, Riddle R, Williams D, Lin S, Jankowiak R, Mazor Y Nat Commun. 2020 Oct 19;11(1):5279. doi: 10.1038/s41467-020-18884-w. PMID:33077842 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Photosystem I 3D structures

spinqualitylabelsall models 6uzv, resolution 3.10Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image