View source for 6pnj


==Structure of Photosystem I Acclimated to Far-red Light==
<SX load='6pnj' size='340' side='right' viewer='molstar' caption='[[6pnj]], [[Resolution|resolution]] 3.19&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6pnj]] is a 30 chain structure with sequence from [https://en.wikipedia.org/wiki/Fischerella_thermalis_PCC_7521 Fischerella thermalis PCC 7521]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6PNJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6PNJ 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]] 3.19&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BCR:BETA-CAROTENE'>BCR</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=F6C:[methyl+9-ethenyl-14-ethyl-8-formyl-4,13,18-trimethyl-20-oxo-3-{3-oxo-3-[(3,7,11,15-tetramethylhexadec-2-en-1-yl)oxy]propyl}-3,4,23,25-tetradehydro-24,26-dihydrophorbine-21-carboxylatato(2-)-kappa~4~N~23~,N~24~,N~25~,N~26~]magnesium'>F6C</scene>, <scene name='pdbligand=LHG:1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE'>LHG</scene>, <scene name='pdbligand=LMG:1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE'>LMG</scene>, <scene name='pdbligand=LMT:DODECYL-BETA-D-MALTOSIDE'>LMT</scene>, <scene name='pdbligand=PQN:PHYLLOQUINONE'>PQN</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=6pnj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6pnj OCA], [https://pdbe.org/6pnj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6pnj RCSB], [https://www.ebi.ac.uk/pdbsum/6pnj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6pnj ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/G6FME9_9CYAN G6FME9_9CYAN] 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.[HAMAP-Rule:MF_00458]  PsaA and psaB bind P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1 and FX.[RuleBase:RU003775]

==See Also==
*[[Photosystem I 3D structures|Photosystem I 3D structures]]
__TOC__
</SX>
[[Category: Fischerella thermalis PCC 7521]]
[[Category: Large Structures]]
[[Category: Bryant DA]]
[[Category: Fromme P]]
[[Category: Gisriel CJ]]
[[Category: Golbeck JH]]
[[Category: Ho M]]
[[Category: Kurashov V]]
[[Category: Shen G]]
[[Category: Williams D]]
[[Category: Zhang S]]