9luu

PSI-4 LHCI dimer supercomplex from M. polymorpha

spinqualitylabelsall models 9luu, resolution 2.52Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 9luu is a 20 chain structure with sequence from Marchantia polymorpha. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 2.52Å Ligands: BCR, CLA, DGD, LFA, LHG, LMG, LMU, LUT, PQN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Photosystem I (PSI) is one of the two photosystems conserved from cyanobacteria to vascular plants, and associates with multiple light-harvesting complexes (LHCs) that capture and transfer solar energy. Liverworts such as Marchantia polymorpha occupy an early evolutionary position among land plants and faced major challenges during terrestrial adaptation, including desiccation, strong light, and UV radiation. We reveal the cryo-electron microscopic structures of PSI-LHCI monomer and homodimer from the liverwort M. polymorpha at resolutions of 1.94 and 2.52 A, respectively. The high-resolution map allows identification of the cofactors of the monomer and reveal differences between the liverwort and moss, another clade of bryophytes. The PSI-LHCI monomer-monomer is stabilized by PsaG and PsaH interactions on the stromal side, which causes the bending and twisting of the homodimer. PsaM interacts with PsaB tightly, indicating a key role of PsaM in mediating the dimerization. Structural study of monomeric and dimeric photosystem I-LHCI supercomplexes from a bryophyte.,Tsai PC, La Rocca R, Motose H, Shen JR, Akita F Commun Biol. 2026 Feb 5;9(1):146. doi: 10.1038/s42003-026-09631-w. PMID:41644713 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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