4ogq

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(Difference between revisions)

Revision as of 11:12, 4 August 2016

Internal Lipid Architecture of the Hetero-Oligomeric Cytochrome b6f Complex

Structural highlights

4ogq is a 8 chain structure with sequence from Nostoc sp.. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , , , , , , , , , , , , , , ,
Related:	1vf5, 1q90, 2e74, 2e75, 2e76, 2zt9, 4h44, 4h13, 4h0l, 3cx5
Activity:	Plastoquinol--plastocyanin reductase, with EC number 1.10.9.1
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[PETM_NOSS1] Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions (By similarity). [CYF_NOSS1] Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions (By similarity). [PETG_NOSS1] Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions. PetG is required for either the stability or assembly of the cytochrome b6-f complex (By similarity). [PETD_NOSS1] Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions (By similarity). [PETN_NOSS1] Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions (By similarity). [CYB6_NOSS1] Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions (By similarity). [UCRIA_NOSS1] Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions (By similarity). [PETL_NOSS1] Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions. PetL is important for photoautotrophic growth as well as for electron transfer efficiency and stability of the cytochrome b6-f complex (By similarity).

Publication Abstract from PubMed

The role of lipids in the assembly, structure, and function of hetero-oligomeric membrane protein complexes is poorly understood. The dimeric photosynthetic cytochrome b6f complex, a 16-mer of eight distinct subunits and 26 transmembrane helices, catalyzes transmembrane proton-coupled electron transfer for energy storage. Using a 2.5 A crystal structure of the dimeric complex, we identified 23 distinct lipid-binding sites per monomer. Annular lipids are proposed to provide a connection for super-complex formation with the photosystem-I reaction center and the LHCII kinase enzyme for transmembrane signaling. Internal lipids mediate crosslinking to stabilize the domain-swapped iron-sulfur protein subunit, dielectric heterogeneity within intermonomer and intramonomer electron transfer pathways, and dimer stabilization through lipid-mediated intermonomer interactions. This study provides a complete structure analysis of lipid-mediated functions in a multi-subunit membrane protein complex and reveals lipid sites at positions essential for assembly and function.

Internal Lipid Architecture of the Hetero-Oligomeric Cytochrome b6f Complex.,Hasan SS, Cramer WA Structure. 2014 Jul 8;22(7):1008-15. doi: 10.1016/j.str.2014.05.004. Epub 2014, Jun 12. PMID:24931468^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Hasan SS, Cramer WA. Internal Lipid Architecture of the Hetero-Oligomeric Cytochrome b6f Complex. Structure. 2014 Jul 8;22(7):1008-15. doi: 10.1016/j.str.2014.05.004. Epub 2014, Jun 12. PMID:24931468 doi:http://dx.doi.org/10.1016/j.str.2014.05.004

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4ogq"

@@ Line 1: / Line 1: @@
 ==Internal Lipid Architecture of the Hetero-Oligomeric Cytochrome b6f Complex==
 <StructureSection load='4ogq' size='340' side='right' caption='[[4ogq]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1vf5|1vf5]], [[1q90|1q90]], [[2e74|2e74]], [[2e75|2e75]], [[2e76|2e76]], [[2zt9|2zt9]], [[4h44|4h44]], [[4h13|4h13]], [[4h0l|4h0l]], [[3cx5|3cx5]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Plastoquinol--plastocyanin_reductase Plastoquinol--plastocyanin reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.10.9.1 1.10.9.1] </span></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4ogq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ogq OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4ogq RCSB], [http://www.ebi.ac.uk/pdbsum/4ogq PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4ogq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ogq OCA], [http://pdbe.org/4ogq PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4ogq RCSB], [http://www.ebi.ac.uk/pdbsum/4ogq PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4ogq ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 18: / Line 19: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4ogq" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

4ogq

From Proteopedia

Revision as of 11:12, 4 August 2016

Internal Lipid Architecture of the Hetero-Oligomeric Cytochrome b6f Complex

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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