7o01

==Dimeric Photosystem I of a temperature sensitive mutant Chlamydomonas reinhardtii==

<StructureSection load='7o01' size='340' side='right'caption='[[7o01]], [[Resolution|resolution]] 17.10&Aring;' scene=''>

<table><tr><td colspan='2'>[[7o01]] is a 20 chain structure with sequence from [https://en.wikipedia.org/wiki/Chlamydomonas_reinhardtii Chlamydomonas reinhardtii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7O01 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7O01 FirstGlance]. <br>

</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 17.1&#8491;</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=7o01 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7o01 OCA], [https://pdbe.org/7o01 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7o01 RCSB], [https://www.ebi.ac.uk/pdbsum/7o01 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7o01 ProSAT]</span></td></tr>

== Function ==

[https://www.uniprot.org/uniprot/PSAA_CHLRE 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.

==See Also==

*[[Photosystem I 3D structures|Photosystem I 3D structures]]

[[Category: Chlamydomonas reinhardtii]]

[[Category: Caspy I]]

[[Category: Nelson N]]