Summary for 6NWA
| Entry DOI | 10.2210/pdb6nwa/pdb |
| EMDB information | 0524 |
| Descriptor | Photosystem I P700 chlorophyll a apoprotein A1, Photosystem I reaction center subunit XII, Iron stress-induced chlorophyll-binding protein, ... (21 entities in total) |
| Functional Keywords | photosystem, antenna, chlorophyll, membrane, photosynthesis |
| Biological source | Synechocystis sp. PCC 6803 More |
| Total number of polymer chains | 51 |
| Total formula weight | 2055658.50 |
| Authors | Toporik, H.,Li, J.,Williams, D.,Chiu, P.L.,Mazor, Y. (deposition date: 2019-02-06, release date: 2019-05-29, Last modification date: 2024-03-20) |
| Primary citation | Toporik, H.,Li, J.,Williams, D.,Chiu, P.L.,Mazor, Y. The structure of the stress-induced photosystem I-IsiA antenna supercomplex. Nat.Struct.Mol.Biol., 26:443-449, 2019 Cited by PubMed Abstract: Photochemical conversion in oxygenic photosynthesis takes place in two large protein-pigment complexes named photosystem II and photosystem I (PSII and PSI, respectively). Photosystems associate with antennae in vivo to increase the size of photosynthetic units to hundreds or thousands of pigments. Regulation of the interactions between antennae and photosystems allows photosynthetic organisms to adapt to their environment. In low-iron environments, cyanobacteria express IsiA, a PSI antenna, critical to their survival. Here we describe the structure of the PSI-IsiA complex isolated from the mesophilic cyanobacterium Synechocystis sp. PCC 6803. This 2-MDa photosystem-antenna supercomplex structure reveals more than 700 pigments coordinated by 51 subunits, as well as the mechanisms facilitating the self-assembly and association of IsiA with multiple PSI assemblies. PubMed: 31133699DOI: 10.1038/s41594-019-0228-8 PDB entries with the same primary citation |
| Experimental method | ELECTRON MICROSCOPY (3.48 Å) |
Structure validation
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