1ilx: Difference between revisions

From Proteopedia
Jump to navigationJump to search
← Older edit
OCA (talk | contribs)
Bots, Bureaucrats, journal, Administrators
3,331,613 edits
No edit summary
OCA (talk | contribs)
Bots, Bureaucrats, journal, Administrators
3,331,613 edits
No edit summary
 
(14 intermediate revisions by the same user not shown)
Line 1: Line 1:
[[Image:1ilx.gif|left|200px]]


{{Structure
==Excited State Dynamics in Photosystem II Revised. New Insights from the X-ray Structure.==
|PDB= 1ilx |SIZE=350|CAPTION= <scene name='initialview01'>1ilx</scene>, resolution 3.80&Aring;
<StructureSection load='1ilx' size='340' side='right'caption='[[1ilx]], [[Resolution|resolution]] 3.80&Aring;' scene=''>
|SITE=  
== Structural highlights ==
|LIGAND= <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=CD:CADMIUM+ION'>CD</scene>, <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=PHO:PHEOPHYTIN+A'>PHO</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene> and <scene name='pdbligand=PL9:2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE'>PL9</scene>
<table><tr><td colspan='2'>[[1ilx]] is a 18 chain structure with sequence from [https://en.wikipedia.org/wiki/Synechococcus_elongatus Synechococcus elongatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ILX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ILX FirstGlance]. <br>
|ACTIVITY=  
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.8&#8491;</td></tr>
|GENE=  
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CD:CADMIUM+ION'>CD</scene>, <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=PHO:PHEOPHYTIN+A'>PHO</scene>, <scene name='pdbligand=PL9:2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE'>PL9</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=1ilx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ilx OCA], [https://pdbe.org/1ilx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ilx RCSB], [https://www.ebi.ac.uk/pdbsum/1ilx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ilx ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The heart of oxygenic photosynthesis is photosystem II (PSII), a multisubunit protein complex that uses solar energy to drive the splitting of water and production of molecular oxygen. The effectiveness of the photochemical reaction center of PSII depends on the efficient transfer of excitation energy from the surrounding antenna chlorophylls. A kinetic model for PSII, based on the x-ray crystal structure coordinates of 37 antenna and reaction center pigment molecules, allows us to map the major energy transfer routes from the antenna chlorophylls to the reaction center chromophores. The model shows that energy transfer to the reaction center is slow compared with the rate of primary electron transport and depends on a few bridging chlorophyll molecules. This unexpected energetic isolation of the reaction center in PSII is similar to that found in the bacterial photosystem, conflicts with the established view of the photophysics of PSII, and may be a functional requirement for primary photochemistry in photosynthesis. In addition, the model predicts a value for the intrinsic photochemical rate constant that is 4 times that found in bacterial reaction centers.


'''Excited State Dynamics in Photosystem II Revised. New Insights from the X-ray Structure.'''
Excited-state dynamics in photosystem II: insights from the x-ray crystal structure.,Vasil'ev S, Orth P, Zouni A, Owens TG, Bruce D Proc Natl Acad Sci U S A. 2001 Jul 17;98(15):8602-7. PMID:11459991<ref>PMID:11459991</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1ilx" style="background-color:#fffaf0;"></div>


==Overview==
==See Also==
The heart of oxygenic photosynthesis is photosystem II (PSII), a multisubunit protein complex that uses solar energy to drive the splitting of water and production of molecular oxygen. The effectiveness of the photochemical reaction center of PSII depends on the efficient transfer of excitation energy from the surrounding antenna chlorophylls. A kinetic model for PSII, based on the x-ray crystal structure coordinates of 37 antenna and reaction center pigment molecules, allows us to map the major energy transfer routes from the antenna chlorophylls to the reaction center chromophores. The model shows that energy transfer to the reaction center is slow compared with the rate of primary electron transport and depends on a few bridging chlorophyll molecules. This unexpected energetic isolation of the reaction center in PSII is similar to that found in the bacterial photosystem, conflicts with the established view of the photophysics of PSII, and may be a functional requirement for primary photochemistry in photosynthesis. In addition, the model predicts a value for the intrinsic photochemical rate constant that is 4 times that found in bacterial reaction centers.
*[[Photosystem II 3D structures|Photosystem II 3D structures]]
 
== References ==
==About this Structure==
<references/>
1ILX is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Synechococcus_elongatus Synechococcus elongatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ILX OCA].
__TOC__
 
</StructureSection>
==Reference==
[[Category: Large Structures]]
Excited-state dynamics in photosystem II: insights from the x-ray crystal structure., Vasil'ev S, Orth P, Zouni A, Owens TG, Bruce D, Proc Natl Acad Sci U S A. 2001 Jul 17;98(15):8602-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11459991 11459991]
[[Category: Protein complex]]
[[Category: Synechococcus elongatus]]
[[Category: Synechococcus elongatus]]
[[Category: Bruce, D.]]
[[Category: Bruce D]]
[[Category: Orth, P.]]
[[Category: Orth P]]
[[Category: Owens, T G.]]
[[Category: Owens TG]]
[[Category: Vasilev, S.]]
[[Category: Vasilev S]]
[[Category: Zouni, A.]]
[[Category: Zouni A]]
[[Category: CD]]
[[Category: CLA]]
[[Category: FE]]
[[Category: HEM]]
[[Category: MN]]
[[Category: PHO]]
[[Category: PL9]]
[[Category: antenna chlorophyll]]
[[Category: exitation transfer]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 11:51:59 2008''

Latest revision as of 06:11, 13 August 2026

Excited State Dynamics in Photosystem II Revised. New Insights from the X-ray Structure.

1ilx, resolution 3.80Å

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "https://proteopedia.org/index.php?title=1ilx&oldid=4475928"