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| - | [[Image:2pvd.jpg|left|200px]] | |
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| - | <!-- | + | ==Crystal srtucture of the reduced ferredoxin:thioredoxin reductase== |
| - | The line below this paragraph, containing "STRUCTURE_2pvd", creates the "Structure Box" on the page.
| + | <StructureSection load='2pvd' size='340' side='right'caption='[[2pvd]], [[Resolution|resolution]] 1.95Å' scene=''> |
| - | You may change the PDB parameter (which sets the PDB file loaded into the applet)
| + | == Structural highlights == |
| - | or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
| + | <table><tr><td colspan='2'>[[2pvd]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Synechocystis_sp. Synechocystis sp.]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PVD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2PVD FirstGlance]. <br> |
| - | or leave the SCENE parameter empty for the default display.
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.95Å</td></tr> |
| - | -->
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | {{STRUCTURE_2pvd| PDB=2pvd | SCENE= }}
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2pvd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pvd OCA], [https://pdbe.org/2pvd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2pvd RCSB], [https://www.ebi.ac.uk/pdbsum/2pvd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2pvd ProSAT]</span></td></tr> |
| | + | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/FTRC_SYNY3 FTRC_SYNY3] Catalytic subunit of the ferredoxin-thioredoxin reductase (FTR), which catalyzes the two-electron reduction of thioredoxins by the electrons provided by reduced ferredoxin.<ref>PMID:10649999</ref> <ref>PMID:14769790</ref> <ref>PMID:17611542</ref> <ref>PMID:19908864</ref> |
| | + | == Evolutionary Conservation == |
| | + | [[Image:Consurf_key_small.gif|200px|right]] |
| | + | Check<jmol> |
| | + | <jmolCheckbox> |
| | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/pv/2pvd_consurf.spt"</scriptWhenChecked> |
| | + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> |
| | + | <text>to colour the structure by Evolutionary Conservation</text> |
| | + | </jmolCheckbox> |
| | + | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2pvd ConSurf]. |
| | + | <div style="clear:both"></div> |
| | | | |
| - | '''Crystal srtucture of the reduced ferredoxin:thioredoxin reductase'''
| + | ==See Also== |
| - | | + | *[[Ferredoxin thioredoxin reductase|Ferredoxin thioredoxin reductase]] |
| - | | + | == References == |
| - | ==Overview== | + | <references/> |
| - | Oxygen-evolving photosynthetic organisms regulate carbon metabolism through a light-dependent redox signalling pathway. Electrons are shuttled from photosystem I by means of ferredoxin (Fdx) to ferredoxin-thioredoxin reductase (FTR), which catalyses the two-electron-reduction of chloroplast thioredoxins (Trxs). These modify target enzyme activities by reduction, regulating carbon flow. FTR is unique in its use of a [4Fe-4S] cluster and a proximal disulphide bridge in the conversion of a light signal into a thiol signal. We determined the structures of FTR in both its one- and its two-electron-reduced intermediate states and of four complexes in the pathway, including the ternary Fdx-FTR-Trx complex. Here we show that, in the first complex (Fdx-FTR) of the pathway, the Fdx [2Fe-2S] cluster is positioned suitably for electron transfer to the FTR [4Fe-4S] centre. After the transfer of one electron, an intermediate is formed in which one sulphur atom of the FTR active site is free to attack a disulphide bridge in Trx and the other sulphur atom forms a fifth ligand for an iron atom in the FTR [4Fe-4S] centre--a unique structure in biology. Fdx then delivers a second electron that cleaves the FTR-Trx heterodisulphide bond, which occurs in the Fdx-FTR-Trx complex. In this structure, the redox centres of the three proteins are aligned to maximize the efficiency of electron transfer from the Fdx [2Fe-2S] cluster to the active-site disulphide of Trxs. These results provide a structural framework for understanding the mechanism of disulphide reduction by an iron-sulphur enzyme and describe previously unknown interaction networks for both Fdx and Trx (refs 4-6).
| + | __TOC__ |
| - | | + | </StructureSection> |
| - | ==About this Structure== | + | [[Category: Large Structures]] |
| - | 2PVD is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Synechocystis_sp. Synechocystis sp.]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PVD OCA].
| + | [[Category: Synechocystis sp]] |
| - | | + | [[Category: Dai S]] |
| - | ==Reference==
| + | |
| - | Structural snapshots along the reaction pathway of ferredoxin-thioredoxin reductase., Dai S, Friemann R, Glauser DA, Bourquin F, Manieri W, Schurmann P, Eklund H, Nature. 2007 Jul 5;448(7149):92-6. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17611542 17611542]
| + | |
| - | [[Category: Protein complex]] | + | |
| - | [[Category: Synechocystis sp.]] | + | |
| - | [[Category: Dai, S.]] | + | |
| - | [[Category: Iron-sulfur]]
| + | |
| - | [[Category: Redox]]
| + | |
| - | [[Category: Thioredoxin]]
| + | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 13:52:02 2008''
| + | |
| Structural highlights
Function
FTRC_SYNY3 Catalytic subunit of the ferredoxin-thioredoxin reductase (FTR), which catalyzes the two-electron reduction of thioredoxins by the electrons provided by reduced ferredoxin.[1] [2] [3] [4]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
See Also
References
- ↑ Dai S, Schwendtmayer C, Schurmann P, Ramaswamy S, Eklund H. Redox signaling in chloroplasts: cleavage of disulfides by an iron-sulfur cluster. Science. 2000 Jan 28;287(5453):655-8. PMID:10649999
- ↑ Glauser DA, Bourquin F, Manieri W, Schürmann P. Characterization of ferredoxin:thioredoxin reductase modified by site-directed mutagenesis. J Biol Chem. 2004 Apr 16;279(16):16662-9. PMID:14769790 doi:10.1074/jbc.M313851200
- ↑ Dai S, Friemann R, Glauser DA, Bourquin F, Manieri W, Schurmann P, Eklund H. Structural snapshots along the reaction pathway of ferredoxin-thioredoxin reductase. Nature. 2007 Jul 5;448(7149):92-6. PMID:17611542 doi:http://dx.doi.org/10.1038/nature05937
- ↑ Xu X, Schürmann P, Chung JS, Hass MA, Kim SK, Hirasawa M, Tripathy JN, Knaff DB, Ubbink M. Ternary protein complex of ferredoxin, ferredoxin:thioredoxin reductase, and thioredoxin studied by paramagnetic NMR spectroscopy. J Am Chem Soc. 2009 Dec 9;131(48):17576-82. PMID:19908864 doi:10.1021/ja904205k
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