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Open data
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Basic information
| Entry | Database: PDB / ID: 9v7h | |||||||||||||||||||||
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| Title | Phycobilisome rod R2 from Gloeobacter violaceus PCC 7421 | |||||||||||||||||||||
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Keywords | PHOTOSYNTHESIS / Phycobilisome | |||||||||||||||||||||
| Function / homology | Function and homology informationphycobilisome / plasma membrane-derived thylakoid membrane / photosynthesis Similarity search - Function | |||||||||||||||||||||
| Biological species | Gloeobacter violaceus PCC 7421 (bacteria) | |||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.95 Å | |||||||||||||||||||||
Authors | Burtseva, A.D. / Baymukhametov, T.N. / Slonimskiy, Y.B. / Popov, V.O. / Sluchanko, N.N. / Boyko, K.M. | |||||||||||||||||||||
| Funding support | Russian Federation, 1items
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Citation | Journal: Sci Adv / Year: 2025Title: Structure and quenching of a bundle-shaped phycobilisome. Authors: Anna D Burtseva / Yury B Slonimskiy / Timur N Baymukhametov / Maria A Sinetova / Daniil A Gvozdev / Georgy V Tsoraev / Dmitry A Cherepanov / Eugene G Maksimov / Vladimir O Popov / Konstantin ...Authors: Anna D Burtseva / Yury B Slonimskiy / Timur N Baymukhametov / Maria A Sinetova / Daniil A Gvozdev / Georgy V Tsoraev / Dmitry A Cherepanov / Eugene G Maksimov / Vladimir O Popov / Konstantin M Boyko / Nikolai N Sluchanko / ![]() Abstract: Cyanobacteria use soluble antenna megacomplexes, phycobilisomes (PBSs), to maximize light-harvesting efficiency and small photoswitchable orange carotenoid proteins (OCPs) to down-regulate PBSs in ...Cyanobacteria use soluble antenna megacomplexes, phycobilisomes (PBSs), to maximize light-harvesting efficiency and small photoswitchable orange carotenoid proteins (OCPs) to down-regulate PBSs in high light. Among known PBS morphologies, the one from the basal cyanobacterial genus still lacks detailed structural characterization. Here, we reconstructed a cryo-electron microscopy structure of the >10-megadalton PBS, with diverging, conformationally mobile bundles of rods composed of stacked phycoerythrin and phycocyanin hexamers, stemming from a pentacylindrical allophycocyanin core belted by auxiliary phycocyanin hexamers. We show how two -specific multidomain linker proteins, Glr1262 and Glr2806, maintain this bundle-shaped architecture and reveal its differential regulation via nonphotochemical quenching by two OCP types of that recognize separate binding sites within the allophycocyanin core, including lateral cylinders absent in tricylindrical cores. | |||||||||||||||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 9v7h.cif.gz | 867.6 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb9v7h.ent.gz | 704.2 KB | Display | PDB format |
| PDBx/mmJSON format | 9v7h.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 9v7h_validation.pdf.gz | 3.6 MB | Display | wwPDB validaton report |
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| Full document | 9v7h_full_validation.pdf.gz | 3.8 MB | Display | |
| Data in XML | 9v7h_validation.xml.gz | 168.7 KB | Display | |
| Data in CIF | 9v7h_validation.cif.gz | 229.7 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/v7/9v7h ftp://data.pdbj.org/pub/pdb/validation_reports/v7/9v7h | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 64813MC ![]() 9v7gC ![]() 9v7iC ![]() 9v7jC ![]() 9v7kC ![]() 9v7lC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Assembly
| Deposited unit | ![]()
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| Noncrystallographic symmetry (NCS) | NCS domain:
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About Yorodumi




Gloeobacter violaceus PCC 7421 (bacteria)
Russian Federation, 1items
Citation














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