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4ogq

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Revision as of 07:33, 17 April 2019

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 See Also
5 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=''>
+<StructureSection load='4ogq' size='340' side='right'caption='[[4ogq]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[4ogq]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Nostoc_sp. Nostoc sp.]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4OGQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4OGQ FirstGlance]. <br>
@@ Line 20: / Line 20: @@
 </div>
 <div class="pdbe-citations 4ogq" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Cytochrome b6|Cytochrome b6]]
+*[[Cytochrome f|Cytochrome f]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Nostoc sp]]
 [[Category: Plastoquinol--plastocyanin reductase]]

4ogq

From Proteopedia

Revision as of 07:33, 17 April 2019

Internal Lipid Architecture of the Hetero-Oligomeric Cytochrome b6f Complex

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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