NMR SOLUTION STRUCTURE OF UNBOUND, OXIDIZED PHOTOSYSTEM I SUBUNIT PSAC, CONTAINING [4FE-4S] CLUSTERS FA AND FBNMR SOLUTION STRUCTURE OF UNBOUND, OXIDIZED PHOTOSYSTEM I SUBUNIT PSAC, CONTAINING [4FE-4S] CLUSTERS FA AND FB
Structural highlights
1k0t is a 1 chain structure with sequence from Synechococcus sp. PCC 7002. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
PSAC_SYNP2 Apoprotein for the two 4Fe-4S centers FA and FB of photosystem I (PSI); essential for photochemical activity. FB is the terminal electron acceptor of PSI, donating electrons to ferredoxin. The C-terminus interacts with PsaA/B/D and helps assemble the protein into the PSI complex. Required for binding of PsaD and PsaE to PSI. 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.[HAMAP-Rule:MF_01303] Mutant proteins with a 3Fe-4S center are not observed bound to PSI in vitro, and are probably not able to do so in vivo.[HAMAP-Rule:MF_01303]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
