7r3k

Chlamydomonas reinhardtii TSP9 mutant small Photosystem I complex

spinqualitylabelsall models 7r3k, resolution 2.52Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7r3k is a 10 chain structure with sequence from Chlamydomonas reinhardtii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: 3PH, BCR, C7Z, CA, CHL, CL0, CLA, DAO, DGA, DGD, ERG, LHG, LMG, LMT, LUT, PLM, PQN, RRX, SF4, SNC, SPH, SQD Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function PSAA_CHLRE PsaA and PsaB bind P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1 and FX. PSI is a plastocyanin/cytochrome c6-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized acceptors A0, A1, FX, FA and FB in turn. Oxidized P700 is reduced on the lumenal side of the thylakoid membrane by plastocyanin or cytochrome c6. Both potential cofactor branches in PSI seem to be active; however, electron transfer seems to proceed preferentially down the path including the phylloquinone bound by PsaA.

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