7COY
Structure of the far-red light utilizing photosystem I of Acaryochloris marina
This is a non-PDB format compatible entry.
Summary for 7COY
| Entry DOI | 10.2210/pdb7coy/pdb |
| EMDB information | 30420 |
| Descriptor | Photosystem I P700 chlorophyll a apoprotein A1, Photosystem I protein PsaL, Photosystem I protein PsaM, ... (20 entities in total) |
| Functional Keywords | photosynthesis, photosystem i, acaryochloris marina, light-harvesting, chlorophyll d |
| Biological source | Acaryochloris marina MBIC11017 More |
| Total number of polymer chains | 33 |
| Total formula weight | 971743.01 |
| Authors | Kawakami, K.,Yonekura, K.,Hamaguchi, T.,Kashino, Y.,Shinzawa-Itoh, K.,Inoue-Kashino, N.,Itoh, S.,Ifuku, K.,Yamashita, E. (deposition date: 2020-08-05, release date: 2021-03-31, Last modification date: 2021-05-05) |
| Primary citation | Hamaguchi, T.,Kawakami, K.,Shinzawa-Itoh, K.,Inoue-Kashino, N.,Itoh, S.,Ifuku, K.,Yamashita, E.,Maeda, K.,Yonekura, K.,Kashino, Y. Structure of the far-red light utilizing photosystem I of Acaryochloris marina. Nat Commun, 12:2333-2333, 2021 Cited by PubMed Abstract: Acaryochloris marina is one of the cyanobacterial species that can use far-red light to drive photochemical reactions for oxygenic photosynthesis. Here, we report the structure of A. marina photosystem I (PSI) reaction center, determined by cryo-electron microscopy at 2.58 Å resolution. The structure reveals an arrangement of electron carriers and light-harvesting pigments distinct from other type I reaction centers. The paired chlorophyll, or special pair (also referred to as P740 in this case), is a dimer of chlorophyll d and its epimer chlorophyll d'. The primary electron acceptor is pheophytin a, a metal-less chlorin. We show the architecture of this PSI reaction center is composed of 11 subunits and we identify key components that help explain how the low energy yield from far-red light is efficiently utilized for driving oxygenic photosynthesis. PubMed: 33879791DOI: 10.1038/s41467-021-22502-8 PDB entries with the same primary citation |
| Experimental method | ELECTRON MICROSCOPY (2.5 Å) |
Structure validation
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