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==NMR SOLUTION STRUCTURE OF UNBOUND, OXIDIZED PHOTOSYSTEM I SUBUNIT PSAC, CONTAINING [4FE-4S] CLUSTERS FA AND FB== | |||
<StructureSection load='1k0t' size='340' side='right'caption='[[1k0t]]' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1k0t]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Synechococcus_sp._PCC_7002 Synechococcus sp. PCC 7002]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1K0T OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1K0T FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene></td></tr> | |||
== | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1k0t FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1k0t OCA], [https://pdbe.org/1k0t PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1k0t RCSB], [https://www.ebi.ac.uk/pdbsum/1k0t PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1k0t ProSAT]</span></td></tr> | ||
[[1k0t]] is a 1 chain structure with sequence from [ | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/PSAC_SYNP2 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 == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/k0/1k0t_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1k0t ConSurf]. | |||
<div style="clear:both"></div> | |||
==See Also== | ==See Also== | ||
*[[Photosystem I|Photosystem I]] | *[[Photosystem I 3D structures|Photosystem I 3D structures]] | ||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Synechococcus sp. | [[Category: Synechococcus sp. PCC 7002]] | ||
[[Category: Antonkine | [[Category: Antonkine ML]] | ||
[[Category: Bentrop | [[Category: Bentrop D]] | ||
[[Category: Bertini | [[Category: Bertini I]] | ||
[[Category: Bryant | [[Category: Bryant DA]] | ||
[[Category: Golbeck | [[Category: Golbeck JH]] | ||
[[Category: Liu | [[Category: Liu G]] | ||
[[Category: Luchinat | [[Category: Luchinat C]] | ||
[[Category: Stehlik | [[Category: Stehlik D]] | ||
Latest revision as of 10:56, 3 April 2024
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
FunctionPSAC_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. See Also |
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