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-Structure paper
| タイトル | Structural study of monomeric and dimeric photosystem I-LHCI supercomplexes from a bryophyte. |
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| ジャーナル・号・ページ | Commun Biol, Vol. 9, Issue 1, Page 146, Year 2026 |
| 掲載日 | 2026年2月5日 |
著者 | Pi-Cheng Tsai / Romain La Rocca / Hiroyasu Motose / Jian-Ren Shen / Fusamichi Akita / ![]() |
| PubMed 要旨 | 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 ...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 Å, 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. |
リンク | Commun Biol / PubMed:41644713 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 1.94 - 2.52 Å |
| 構造データ | EMDB-63404, PDB-9lut: EMDB-63405, PDB-9luu: |
| 化合物 | ![]() ChemComp-CHL: ![]() ChemComp-CLA: ![]() ChemComp-LUT: ![]() ChemComp-XAT: ![]() ChemComp-LHG: ![]() ChemComp-BCR: ![]() ChemComp-CL0: ![]() ChemComp-PQN: ![]() ChemComp-SF4: ![]() ChemComp-LMU: ![]() ChemComp-DGD: ![]() ChemComp-LMG: ![]() ChemComp-HOH: ![]() ChemComp-LFA: |
| 由来 |
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キーワード | PHOTOSYNTHESIS / Photosystem I / light-harvasting complex |
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marchantia polymorpha (ゼニゴケ)
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