7dwq
From Proteopedia
(Difference between revisions)
(New page: '''Unreleased structure''' The entry 7dwq is ON HOLD Authors: Chen, J.H., Zhang, X., Shen, J.R. Description: Photosystem I from a chlorophyll d-containing cyanobacterium Acaryochloris ...) |
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| - | '''Unreleased structure''' | ||
| - | + | ==Photosystem I from a chlorophyll d-containing cyanobacterium Acaryochloris marina== | |
| + | <StructureSection load='7dwq' size='340' side='right'caption='[[7dwq]], [[Resolution|resolution]] 3.30Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[7dwq]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Acaryochloris_marina_MBIC11017 Acaryochloris marina MBIC11017]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7DWQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7DWQ 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]] 3.3Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=8CT:1,3,3-trimethyl-2-[(1~{E},3~{E},5~{Z},7~{Z},9~{Z},11~{E},13~{Z},15~{E},17~{E})-3,7,12,16-tetramethyl-18-[(1~{R})-2,6,6-trimethylcyclohex-2-en-1-yl]octadeca-1,3,5,7,9,11,13,15,17-nonaenyl]cyclohexene'>8CT</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=PHO:PHEOPHYTIN+A'>PHO</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=7dwq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7dwq OCA], [https://pdbe.org/7dwq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7dwq RCSB], [https://www.ebi.ac.uk/pdbsum/7dwq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7dwq ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Photosystem I (PSI) is a large protein supercomplex that catalyzes the light-dependent oxidation of plastocyanin (or cytochrome c(6) ) and the reduction of ferredoxin. This catalytic reaction is realized by a transmembrane electron transfer chain consisting of primary electron donor (a special chlorophyll (Chl) pair) and electron acceptors A(0) , A(1) , and three Fe(4) S(4) clusters, F(X) , F(A) , and F(B) . Here we report the PSI structure from a Chl d-dominated cyanobacterium Acaryochloris marina at 3.3 A resolution obtained by single-particle cryo-electron microscopy. The A. marina PSI exists as a trimer with three identical monomers. Surprisingly, the structure reveals a unique composition of electron transfer chain in which the primary electron acceptor A(0) is composed of two pheophytin a rather than Chl a found in any other well-known PSI structures. A novel subunit Psa27 is observed in the A. marina PSI structure. In addition, 77 Chls, 13 alpha-carotenes, two phylloquinones, three Fe-S clusters, two phosphatidyl glycerols, and one monogalactosyl-diglyceride were identified in each PSI monomer. Our results provide a structural basis for deciphering the mechanism of photosynthesis in a PSI complex with Chl d as the dominating pigments and absorbing far-red light. | ||
| - | + | A unique photosystem I reaction center from a chlorophyll d-containing cyanobacterium Acaryochloris marina.,Xu C, Zhu Q, Chen JH, Shen L, Yi X, Huang Z, Wang W, Chen M, Kuang T, Shen JR, Zhang X, Han G J Integr Plant Biol. 2021 Oct;63(10):1740-1752. doi: 10.1111/jipb.13113. Epub , 2021 Jun 24. PMID:34002536<ref>PMID:34002536</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| - | [[Category: | + | <div class="pdbe-citations 7dwq" style="background-color:#fffaf0;"></div> |
| - | [[Category: | + | |
| - | [[Category: | + | ==See Also== |
| + | *[[Photosystem I 3D structures|Photosystem I 3D structures]] | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Acaryochloris marina MBIC11017]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Chen JH]] | ||
| + | [[Category: Shen JR]] | ||
| + | [[Category: Zhang X]] | ||
Current revision
Photosystem I from a chlorophyll d-containing cyanobacterium Acaryochloris marina
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