Database of articles cited by EMDB/PDB/SASBDB data

Keywords
Structure methods	All X-ray diffraction NMR electron microscopy small angle scattering neutron diffraction fiber diffraction powder diffraction infrared spectroscopy EPR fluorescence transfer theoretical model Hybrid
Author
Journal
IF	>30 >20 >10 >5 all

Title	Architecture of photosystem I-light-harvesting complex from the eukaryotic filamentous yellow-green alga Tribonema minus.
Journal, issue, pages	J Integr Plant Biol, Vol. 67, Issue 11, Page 3014-3031, Year 2025
Publish date	Aug 8, 2025
Authors	Ruiqi Shao / Yuqi Zou / Hui Shang / Yue Qiu / Zuxing Liang / Xiaodong Su / Shumeng Zhang / Mei Li / Xiaowei Pan /
PubMed Abstract	Eukaryotic photosystem I (PSI) is a multi-subunit pigment-protein supercomplex that consists of a core complex and multiple peripheral light-harvesting complexes I (LHCIs), which increases the light ...Eukaryotic photosystem I (PSI) is a multi-subunit pigment-protein supercomplex that consists of a core complex and multiple peripheral light-harvesting complexes I (LHCIs), which increases the light absorption capacity of the core complex. Throughout the evolution of oxygenic photoautotrophs, the core subunits of PSI have remained highly conserved, while LHCIs exhibit significant variability, presumably to adapt to diverse environments. This study presents a 2.82 Å resolution structure of PSI from the filamentous yellow-green alga Tribonema minus (Tm), a member of the class Xanthophyceae that evolved from red algae through endosymbiosis and is considered a promising candidate for biofuel production due to its high biomass and lipid content. Our structure reveals a supramolecular organization consisting of 12 core subunits and 13 LHCIs, here referred to as Xanthophyceae light-harvesting complexes (XLHs), along with the arrangement of pigments within the TmPSI-XLH supercomplex. A structural comparison between TmPSI-XLH and PSI-LHCI from various red lineages highlights distinctive features of TmPSI-XLH, suggesting that it represents a unique intermediate state in the PSI assembly process during the evolutionary transition from red algae to diatoms. Our findings advance the understanding of the molecular mechanisms responsible for energy transfer in Xanthophyceae PSI-XLH and the evolutionary adaptation of red lineages.
External links	J Integr Plant Biol / PubMed:40778523
Methods	EM (single particle)
Resolution	2.69 - 4.17 Å
Structure data	63625 9m4f EMDB-63625, PDB-9m4f: Photosystem I from the eukaryotic filamentous algae Method: EM (single particle) / Resolution: 2.82 Å EMDB-63818: Focused refinement map of light harvesting complexes XLH2/3/4/5/6/7/12/13 in the PSI of Tribonema minus Method: EM (single particle) / Resolution: 3.25 Å EMDB-63819: Focus refinement map of the light harvesting complexes XLH1/8/9/10/11 in the PSI of Tribonema minus. Method: EM (single particle) / Resolution: 3.35 Å EMDB-63820: Focused refinement map of the core complex in the photosystem I of Tribonema minus. Method: EM (single particle) / Resolution: 2.69 Å EMDB-63821: Raw consensus map of PSI-LHCI supercomplex from Tribonema minus Method: EM (single particle) / Resolution: 2.82 Å EMDB-63822: Consensus map reconstructed from particles with optimal densities in the PsaS region. Method: EM (single particle) / Resolution: 4.17 Å
Chemicals	ChemComp-CLA: CHLOROPHYLL A ChemComp-BCR: BETA-CAROTENE ChemComp-DD6: (3S,3'R,5R,6S,7cis)-7',8'-didehydro-5,6-dihydro-5,6-epoxy-beta,beta-carotene-3,3'-diol ChemComp-LMT: DODECYL-BETA-D-MALTOSIDE / detergentYM ChemComp-LHG: 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE / phospholipidYM PDB-1l1g: The Structure of Porcine Pancreatic Elastase Complexed with Xenon and Bromide, Cryoprotected with Glycerol ChemComp-LMG: 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE ChemComp-PQN: PHYLLOQUINONE ChemComp-SF4: IRON/SULFUR CLUSTER
Source	tribonema minus (eukaryote)
Keywords	PHOTOSYNTHESIS / Photosystem I / Xanthophyceae / Tribonema minus