7ewk: Difference between revisions

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-====
+==Barley photosystem I-LHCI-Lhca6 supercomplex==
-<StructureSection load='7ewk' size='340' side='right'caption='[[7ewk]]' scene=''>
+<StructureSection load='7ewk' size='340' side='right'caption='[[7ewk]], [[Resolution|resolution]] 3.88&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id= OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol= FirstGlance]. <br>
+<table><tr><td colspan='2'>[[7ewk]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Hordeum_vulgare Hordeum vulgare] and [https://en.wikipedia.org/wiki/Hordeum_vulgare_subsp._spontaneum Hordeum vulgare subsp. spontaneum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7EWK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7EWK FirstGlance]. <br>
-</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=7ewk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7ewk OCA], [https://pdbe.org/7ewk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7ewk RCSB], [https://www.ebi.ac.uk/pdbsum/7ewk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7ewk ProSAT]</span></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.88&#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=CHL:CHLOROPHYLL+B'>CHL</scene>, <scene name='pdbligand=CL0:CHLOROPHYLL+A+ISOMER'>CL0</scene>, <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</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=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=SF4:IRON/SULFUR+CLUSTER'>SF4</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=7ewk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7ewk OCA], [https://pdbe.org/7ewk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7ewk RCSB], [https://www.ebi.ac.uk/pdbsum/7ewk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7ewk ProSAT]</span></td></tr>
 </table>
+== Function ==
+[https://www.uniprot.org/uniprot/PSAC_HORVU PSAC_HORVU] 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-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.
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+The chloroplast NADH dehydrogenase-like (NDH) complex is composed of at least 29 subunits and has an important role in mediating photosystem I (PSI) cyclic electron transport (CET)(1-3). The NDH complex associates with PSI to form the PSI-NDH supercomplex and fulfil its function. Here, we report cryo-electron microscopy structures of a PSI-NDH supercomplex from barley (Hordeum vulgare). The structures reveal that PSI-NDH is composed of two copies of the PSI-light-harvesting complex I (LHCI) subcomplex and one NDH complex. Two monomeric LHCI proteins, Lhca5 and Lhca6, mediate the binding of two PSI complexes to NDH. Ten plant chloroplast-specific NDH subunits are presented and their exact positions as well as their interactions with other subunits in NDH are elucidated. In all, this study provides a structural basis for further investigations on the functions and regulation of PSI-NDH-dependent CET.
+Architecture of the chloroplast PSI-NDH supercomplex in Hordeum vulgare.,Shen L, Tang K, Wang W, Wang C, Wu H, Mao Z, An S, Chang S, Kuang T, Shen JR, Han G, Zhang X Nature. 2022 Jan;601(7894):649-654. doi: 10.1038/s41586-021-04277-6. Epub 2021 , Dec 8. PMID:34879391<ref>PMID:34879391</ref>
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
+<div class="pdbe-citations 7ewk" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Photosystem I 3D structures|Photosystem I 3D structures]]
+== References ==
+<references/>
 __TOC__
 </StructureSection>
+[[Category: Hordeum vulgare]]
+[[Category: Hordeum vulgare subsp. spontaneum]]
 [[Category: Large Structures]]
-[[Category: Z-disk]]
+[[Category: Han GY]]
+[[Category: Shen JR]]
+[[Category: Shen L]]
+[[Category: Tang K]]
+[[Category: Wang WD]]
+[[Category: Zhang X]]