View source for 8hfq


==Cryo-EM structure of CpcL-PBS from cyanobacterium Synechocystis sp. PCC 6803==
<StructureSection load='8hfq' size='340' side='right'caption='[[8hfq]], [[Resolution|resolution]] 2.64&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8hfq]] is a 40 chain structure with sequence from [https://en.wikipedia.org/wiki/Synechocystis_sp._PCC_6803_substr._Kazusa Synechocystis sp. PCC 6803 substr. Kazusa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8HFQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8HFQ 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]] 2.64&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CYC:PHYCOCYANOBILIN'>CYC</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=8hfq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8hfq OCA], [https://pdbe.org/8hfq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8hfq RCSB], [https://www.ebi.ac.uk/pdbsum/8hfq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8hfq ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PHCA_SYNY3 PHCA_SYNY3] Light-harvesting photosynthetic bile pigment-protein from the phycobiliprotein complex.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Phycobilisomes (PBS) are the major light harvesting complexes of photosynthesis in the cyanobacteria and red algae. CpcL-PBS is a type of small PBS in cyanobacteria that transfers energy directly to photosystem I without the core structure. Here we report the cryo-EM structure of the CpcL-PBS from the cyanobacterium Synechocystis sp. PCC 6803 at 2.6-A resolution. The structure shows the CpcD domain of ferredoxin: NADP(+) oxidoreductase is located at the distal end of CpcL-PBS, responsible for its attachment to PBS. With the evidence of ultrafast transient absorption and fluorescence spectroscopy, the roles of individual bilins in energy transfer are revealed. The bilin (1I)beta(82)(2) located near photosystem I has an enhanced planarity and is the red-bilin responsible for the direct energy transfer to photosystem I.

Cryo-EM and femtosecond spectroscopic studies provide mechanistic insight into the energy transfer in CpcL-phycobilisomes.,Zheng L, Zhang Z, Wang H, Zheng Z, Wang J, Liu H, Chen H, Dong C, Wang G, Weng Y, Gao N, Zhao J Nat Commun. 2023 Jul 5;14(1):3961. doi: 10.1038/s41467-023-39689-7. PMID:37407580<ref>PMID:37407580</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8hfq" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Synechocystis sp. PCC 6803 substr. Kazusa]]
[[Category: Gao N]]
[[Category: Wang H]]
[[Category: Zhang Z]]
[[Category: Zhao J]]
[[Category: Zheng L]]
[[Category: Zheng Z]]