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| | ==Crystal structure of SufC-SufD complex involved in the iron-sulfur cluster biosynthesis== | | ==Crystal structure of SufC-SufD complex involved in the iron-sulfur cluster biosynthesis== |
| - | <StructureSection load='2zu0' size='340' side='right' caption='[[2zu0]], [[Resolution|resolution]] 2.20Å' scene=''> | + | <StructureSection load='2zu0' size='340' side='right'caption='[[2zu0]], [[Resolution|resolution]] 2.20Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2zu0]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Ecoli Ecoli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ZU0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ZU0 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2zu0]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_K-12 Escherichia coli K-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ZU0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2ZU0 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC+ACID'>MES</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">SufC and SufD ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 ECOLI])</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC+ACID'>MES</scene></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=2zu0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2zu0 OCA], [http://pdbe.org/2zu0 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2zu0 RCSB], [http://www.ebi.ac.uk/pdbsum/2zu0 PDBsum]</span></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=2zu0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2zu0 OCA], [https://pdbe.org/2zu0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2zu0 RCSB], [https://www.ebi.ac.uk/pdbsum/2zu0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2zu0 ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/SUFD_ECOLI SUFD_ECOLI]] The SufBCD complex acts synergistically with SufE to stimulate the cysteine desulfurase activity of SufS. The SufBCD complex contributes to the assembly or repair of oxygen-labile iron-sulfur clusters under oxidative stress. May facilitate iron uptake from extracellular iron chelators under iron limitation. Required for the stability of the FhuF protein.<ref>PMID:10322040</ref> <ref>PMID:12941942</ref> [[http://www.uniprot.org/uniprot/SUFC_ECOLI SUFC_ECOLI]] Has low ATPase activity. The SufBCD complex acts synergistically with SufE to stimulate the cysteine desulfurase activity of SufS. The SufBCD complex contributes to the assembly or repair of oxygen-labile iron-sulfur clusters under oxidative stress. May facilitate iron uptake from extracellular iron chelators under iron limitation.<ref>PMID:12554644</ref> <ref>PMID:12941942</ref> | + | [https://www.uniprot.org/uniprot/SUFD_ECOLI SUFD_ECOLI] The SufBCD complex acts synergistically with SufE to stimulate the cysteine desulfurase activity of SufS. The SufBCD complex contributes to the assembly or repair of oxygen-labile iron-sulfur clusters under oxidative stress. May facilitate iron uptake from extracellular iron chelators under iron limitation. Required for the stability of the FhuF protein.<ref>PMID:10322040</ref> <ref>PMID:12941942</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| | Check<jmol> | | Check<jmol> |
| | <jmolCheckbox> | | <jmolCheckbox> |
| - | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/zu/2zu0_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/zu/2zu0_consurf.spt"</scriptWhenChecked> |
| | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> |
| | <text>to colour the structure by Evolutionary Conservation</text> | | <text>to colour the structure by Evolutionary Conservation</text> |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Ecoli]] | + | [[Category: Escherichia coli K-12]] |
| - | [[Category: Wada, K]]
| + | [[Category: Large Structures]] |
| - | [[Category: Abc-atpase]]
| + | [[Category: Wada K]] |
| - | [[Category: Atp-binding]] | + | |
| - | [[Category: Biosynthetic protein-protein binding complex]] | + | |
| - | [[Category: Iron-sulfur cluster]]
| + | |
| - | [[Category: Nucleotide-binding]]
| + | |
| - | [[Category: Transport]]
| + | |
| Structural highlights
Function
SUFD_ECOLI The SufBCD complex acts synergistically with SufE to stimulate the cysteine desulfurase activity of SufS. The SufBCD complex contributes to the assembly or repair of oxygen-labile iron-sulfur clusters under oxidative stress. May facilitate iron uptake from extracellular iron chelators under iron limitation. Required for the stability of the FhuF protein.[1] [2]
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
Maturation of iron-sulfur (Fe-S) proteins is achieved by the SUF machinery in a wide number of eubacteria and archaea, as well as eukaryotic chloroplasts. This machinery is encoded in Escherichia coli by the sufABCDSE operon, where three Suf components, SufB, SufC, and SufD, form a complex and appear to provide an intermediary site for the Fe-S cluster assembly. Here, we report the quaternary structure of the SufC(2)-SufD(2) complex in which SufC is bound to the C-terminal domain of SufD. Comparison with the monomeric structure of SufC revealed conformational change of the active-site residues: SufC becomes competent for ATP binding and hydrolysis upon association with SufD. The two SufC subunits were spatially separated in the SufC(2)-SufD(2) complex, whereas cross-linking experiments in solution have indicated that two SufC molecules associate with each other in the presence of Mg(2+) and ATP. Such dimer formation of SufC may lead to a gross structural change of the SufC(2)-SufD(2) complex. Furthermore, genetic analysis of SufD revealed an essential histidine residue buried inside the dimer interface, suggesting that conformational change may expose this crucial residue. These findings, together with biochemical characterization of the SufB-SufC-SufD complex, have led us to propose a model for the Fe-S cluster biosynthesis in the complex.
Molecular dynamism of Fe-S cluster biosynthesis implicated by the structure of the SufC(2)-SufD(2) complex.,Wada K, Sumi N, Nagai R, Iwasaki K, Sato T, Suzuki K, Hasegawa Y, Kitaoka S, Minami Y, Outten FW, Takahashi Y, Fukuyama K J Mol Biol. 2009 Mar 20;387(1):245-58. Epub 2009 Jan 31. PMID:19361433[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Patzer SI, Hantke K. SufS is a NifS-like protein, and SufD is necessary for stability of the [2Fe-2S] FhuF protein in Escherichia coli. J Bacteriol. 1999 May;181(10):3307-9. PMID:10322040
- ↑ Outten FW, Wood MJ, Munoz FM, Storz G. The SufE protein and the SufBCD complex enhance SufS cysteine desulfurase activity as part of a sulfur transfer pathway for Fe-S cluster assembly in Escherichia coli. J Biol Chem. 2003 Nov 14;278(46):45713-9. Epub 2003 Aug 26. PMID:12941942 doi:http://dx.doi.org/10.1074/jbc.M308004200
- ↑ Wada K, Sumi N, Nagai R, Iwasaki K, Sato T, Suzuki K, Hasegawa Y, Kitaoka S, Minami Y, Outten FW, Takahashi Y, Fukuyama K. Molecular dynamism of Fe-S cluster biosynthesis implicated by the structure of the SufC(2)-SufD(2) complex. J Mol Biol. 2009 Mar 20;387(1):245-58. Epub 2009 Jan 31. PMID:19361433 doi:10.1016/j.jmb.2009.01.054
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