4kt0 | pdb_00004kt0

Crystal structure of a virus like photosystem I from the cyanobacterium Synechocystis PCC 6803

spinqualitylabelsall models 4kt0, resolution 2.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4kt0 is a 9 chain structure with sequence from Aphanocapsa sp. (strain n-1). Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: BCR, CL, CL0, CLA, LHG, LMG, LMU, PQN, SF4 Related: 1jb0, 3lw5, 4l6v Gene: BEST7613_2234, MYO_18690, psaA (Aphanocapsa sp. (strain N-1)), psaB, BEST7613_2235, MYO_18700 (Aphanocapsa sp. (strain N-1)), psaC, BEST7613_5694, MYO_120930 (Aphanocapsa sp. (strain N-1)), psaD, BEST7613_1459, MYO_11100 (Aphanocapsa sp. (strain N-1)), psaE, BEST7613_5968, MYO_118260 (Aphanocapsa sp. (strain N-1)), psaF, BEST7613_2928 (Aphanocapsa sp. (strain N-1)), psaJ, BEST7613_2927, MYO_115450 (Aphanocapsa sp. (strain N-1)), psaK, BEST7613_4536, MYO_129960 (Aphanocapsa sp. (strain N-1)), psbM, psaM, BEST7613_1787, MYO_14340 (Aphanocapsa sp. (strain N-1)) Activity: Photosystem I, with EC number 1.97.1.12 Resources: FirstGlance, OCA, RCSB, PDBsum Publication Abstract from PubMed Oxygenic photosynthesis supports virtually all life forms on earth. Light energy is converted by two photosystems-photosystem I (PSI) and photosystem II (PSII). Globally, nearly 50% of photosynthesis takes place in the Ocean, where single cell cyanobacteria and algae reside together with their viruses. An operon encoding PSI was identified in cyanobacterial marine viruses. We generated a PSI that mimics the salient features of the viral complex, named PSI(PsaJF). PSI(PsaJF) is promiscuous for its electron donors and can accept electrons from respiratory cytochromes. We solved the structure of PSI(PsaJF) and a monomeric PSI, with subunit composition similar to the viral PSI, providing for the first time a detailed description of the reaction center and antenna system from mesophilic cyanobacteria, including red chlorophylls and cofactors of the electron transport chain. Our finding extends the understanding of PSI structure, function and evolution and suggests a unique function for the viral PSI. DOI: https://dx.doi.org/10.7554/eLife.01496.001. Crystal structures of virus-like photosystem I complexes from the mesophilic cyanobacterium Synechocystis PCC 6803.,Mazor Y, Nataf D, Toporik H, Nelson N Elife. 2013 Jan 1;3:e01496. doi: 10.7554/eLife.01496. PMID:24473073 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Photosystem I

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