1m3x

From Proteopedia

(Difference between revisions)

Revision as of 09:24, 24 July 2019

Photosynthetic Reaction Center From Rhodobacter Sphaeroides

Structural highlights

1m3x is a 3 chain structure with sequence from "rhodococcus_capsulatus"_molisch_1907 "rhodococcus capsulatus" molisch 1907. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , , , , , , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[RCEL_RHOSH] The reaction center is a membrane-bound complex that mediates the initial photochemical event in the electron transfer process of photosynthesis. [RCEH_RHOSH] The reaction center is a membrane-bound complex that mediates the initial photochemical event in the electron transfer process of photosynthesis. [RCEM_RHOSH] The reaction center is a membrane-bound complex that mediates the initial photochemical event in the electron transfer process of photosynthesis.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The structure of the reaction center from Rhodobacter sphaeroides has been solved by using x-ray diffraction at a 2.55-A resolution limit. Three lipid molecules that lie on the surface of the protein are resolved in the electron density maps. In addition to a cardiolipin that has previously been reported [McAuley, K. E., Fyfe, P. K., Ridge, J. P., Isaacs, N. W., Cogdell, R. J. & Jones, M. R. (1999) Proc. Natl. Acad. Sci. USA 96, 14706-14711], two other major lipids of the cell membrane are found, a phosphatidylcholine and a glucosylgalactosyl diacylglycerol. The presence of these three lipids has been confirmed by laser mass spectroscopy. The lipids are located in the hydrophobic region of the protein surface and interact predominately with hydrophobic amino acids, in particular aromatic residues. Although the cardiolipin is over 15 A from the cofactors, the other two lipids are in close contact with the cofactors and may contribute to the difference in energetics for the two branches of cofactors that is primarily responsible for the asymmetry of electron transfer. The glycolipid is 3.5 A from the active bacteriochlorophyll monomer and shields this cofactor from the solvent in contrast to a much greater exposed surface evident for the inactive bacteriochlorophyll monomer. The phosphate atom of phosphatidylcholine is 6.5 A from the inactive bacteriopheophytin, and the associated electrostatic interactions may contribute to electron transfer rates involving this cofactor. Overall, the lipids span a distance of approximately 30 A, which is consistent with a bilayer-like arrangement suggesting the presence of an "inner shell" of lipids around membrane proteins that is critical for membrane function.

Interactions between lipids and bacterial reaction centers determined by protein crystallography.,Camara-Artigas A, Brune D, Allen JP Proc Natl Acad Sci U S A. 2002 Aug 20;99(17):11055-60. Epub 2002 Aug 7. PMID:12167672^[1]

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

References

↑ Camara-Artigas A, Brune D, Allen JP. Interactions between lipids and bacterial reaction centers determined by protein crystallography. Proc Natl Acad Sci U S A. 2002 Aug 20;99(17):11055-60. Epub 2002 Aug 7. PMID:12167672 doi:10.1073/pnas.162368399

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1m3x"

@@ Line 1: / Line 1: @@
 ==Photosynthetic Reaction Center From Rhodobacter Sphaeroides==
-<StructureSection load='1m3x' size='340' side='right' caption='[[1m3x]], [[Resolution|resolution]] 2.55&Aring;' scene=''>
+<StructureSection load='1m3x' size='340' side='right'caption='[[1m3x]], [[Resolution|resolution]] 2.55&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1m3x]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/"rhodococcus_capsulatus"_molisch_1907 "rhodococcus capsulatus" molisch 1907]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M3X OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1M3X FirstGlance]. <br>
@@ Line 13: / Line 13: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/m3/1m3x_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/m3/1m3x_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 33: / Line 33: @@
 </StructureSection>
 [[Category: Rhodococcus capsulatus molisch 1907]]
+[[Category: Large Structures]]
 [[Category: Allen, J P]]
 [[Category: Brune, D]]

1m3x

From Proteopedia

Revision as of 09:24, 24 July 2019

Photosynthetic Reaction Center From Rhodobacter Sphaeroides

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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