6zoo: Difference between revisions
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New page: '''Unreleased structure''' The entry 6zoo is ON HOLD Authors: Description: Category: Unreleased Structures |
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The | ==Photosystem I reduced Plastocyanin Complex== | ||
<StructureSection load='6zoo' size='340' side='right'caption='[[6zoo]], [[Resolution|resolution]] 2.74Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[6zoo]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Pisum_sativum Pisum sativum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6ZOO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6ZOO 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]] 2.74Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=3PH:1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE'>3PH</scene>, <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=CU:COPPER+(II)+ION'>CU</scene>, <scene name='pdbligand=DGD:DIGALACTOSYL+DIACYL+GLYCEROL+(DGDG)'>DGD</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=LUT:(3R,3R,6S)-4,5-DIDEHYDRO-5,6-DIHYDRO-BETA,BETA-CAROTENE-3,3-DIOL'>LUT</scene>, <scene name='pdbligand=PQN:PHYLLOQUINONE'>PQN</scene>, <scene name='pdbligand=SNK:(2~{R})-2-azanyl-3-(4-ethanoylsulfanyl-1~{H}-imidazol-5-yl)propanoic+acid'>SNK</scene>, <scene name='pdbligand=XAT:(3S,5R,6S,3S,5R,6S)-5,6,5,6-DIEPOXY-5,6,5,6-+TETRAHYDRO-BETA,BETA-CAROTENE-3,3-DIOL'>XAT</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=6zoo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6zoo OCA], [https://pdbe.org/6zoo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6zoo RCSB], [https://www.ebi.ac.uk/pdbsum/6zoo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6zoo ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/CAB6_ARATH CAB6_ARATH] The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated. | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Photosystem I is defined as plastocyanin-ferredoxin oxidoreductase. Taking advantage of genetic engineering, kinetic analyses and cryo-EM, our data provide novel mechanistic insights into binding and electron transfer between PSI and Pc. Structural data at 2.74 A resolution reveals strong hydrophobic interactions in the plant PSI-Pc ternary complex, leading to exclusion of water molecules from PsaA-PsaB/Pc interface once the PSI-Pc complex forms. Upon oxidation of Pc, a slight tilt of bound oxidized Pc allows water molecules to accommodate the space between Pc and PSI to drive Pc dissociation. Such a scenario is consistent with the six times larger dissociation constant of oxidized as compared with reduced Pc and mechanistically explains how this molecular machine optimized electron transfer for fast turnover. | |||
Structure of plant photosystem I-plastocyanin complex reveals strong hydrophobic interactions.,Caspy I, Fadeeva M, Kuhlgert S, Borovikova-Sheinker A, Klaiman D, Masrati G, Drepper F, Ben-Tal N, Hippler M, Nelson N Biochem J. 2021 Jun 25;478(12):2371-2384. doi: 10.1042/BCJ20210267. PMID:34085703<ref>PMID:34085703</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 6zoo" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Photosystem I 3D structures|Photosystem I 3D structures]] | |||
*[[Plastocyanin 3D structures|Plastocyanin 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Pisum sativum]] | |||
[[Category: Caspy I]] | |||
[[Category: Nelson N]] | |||
[[Category: Shkolnisky Y]] | |||
Latest revision as of 09:23, 9 April 2025
Photosystem I reduced Plastocyanin Complex
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