View source for 5xno


==Structure of M-LHCII and CP24 complexes in the unstacked C2S2M2-type PSII-LHCII supercomplex from Pisum sativum==
<SX load='5xno' size='340' side='right' viewer='molstar' caption='[[5xno]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5xno]] is a 4 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=5XNO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5XNO 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]] 3.5&#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=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=LHG:1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE'>LHG</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=NEX:(3S,3S,5R,5R,6R,6S,8R,9cis)-6,7-didehydro-5,5,6,6-tetrahydro-5,6-epoxy-beta,beta-carotene-3,3,5-triol'>NEX</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=5xno FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5xno OCA], [https://pdbe.org/5xno PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5xno RCSB], [https://www.ebi.ac.uk/pdbsum/5xno PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5xno ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CB28_PEA CB28_PEA] The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated.<ref>PMID:2174365</ref>   May channel protons produced in the catalytic Mn center of water oxidation into the thylakoid lumen.<ref>PMID:2174365</ref> 
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== Publication Abstract from PubMed ==
In plants, the photosynthetic machinery photosystem II (PSII) consists of a core complex associated with variable numbers of light-harvesting complexes II (LHCIIs). The supercomplex, comprising a dimeric core and two strongly bound and two moderately bound LHCIIs (C2S2M2), is the dominant form in plants acclimated to limited light. Here we report cryo-electron microscopy structures of two forms of C2S2M2 (termed stacked and unstacked) from Pisum sativum at 2.7- and 3.2-angstrom resolution, respectively. In each C2S2M2, the moderately bound LHCII assembles specifically with a peripheral antenna complex CP24-CP29 heterodimer and the strongly bound LHCII, to establish a pigment network that facilitates light harvesting at the periphery and energy transfer into the core. The high mobility of peripheral antennae, including the moderately bound LHCII and CP24, provides insights into functional regulation of plant PSII.

Structure and assembly mechanism of plant C2S2M2-type PSII-LHCII supercomplex.,Su X, Ma J, Wei X, Cao P, Zhu D, Chang W, Liu Z, Zhang X, Li M Science. 2017 Aug 25;357(6353):815-820. doi: 10.1126/science.aan0327. PMID:28839073<ref>PMID:28839073</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 5xno" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</SX>
[[Category: Large Structures]]
[[Category: Pisum sativum]]
[[Category: Cao P]]
[[Category: Chang WR]]
[[Category: Li M]]
[[Category: Liu ZF]]
[[Category: Ma J]]
[[Category: Su XD]]
[[Category: Wei XP]]
[[Category: Zhang XZ]]
[[Category: Zhu DJ]]