2ji2: Difference between revisions

Latest revision as of 14:49, 13 December 2023

X-ray structure of E114A mutant of superoxide reductase from Desulfoarculus baarsii in the native, reduced form

Structural highlights

2ji2 is a 4 chain structure with sequence from Desulfarculus baarsii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.7Å
Ligands:	CA, FE, FE2, NO3
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

DFX_DESB2 Catalyzes the one-electron reduction of superoxide anion radical to hydrogen peroxide at a nonheme ferrous iron center. Plays a fundamental role in case of oxidative stress via its superoxide detoxification activity.^[1]

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

Iron-peroxide intermediates are central in the reaction cycle of many iron-containing biomolecules. We trapped iron(III)-(hydro)peroxo species in crystals of superoxide reductase (SOR), a nonheme mononuclear iron enzyme that scavenges superoxide radicals. X-ray diffraction data at 1.95 angstrom resolution and Raman spectra recorded in crystallo revealed iron-(hydro)peroxo intermediates with the (hydro)peroxo group bound end-on. The dynamic SOR active site promotes the formation of transient hydrogen bond networks, which presumably assist the cleavage of the iron-oxygen bond in order to release the reaction product, hydrogen peroxide.

Raman-assisted crystallography reveals end-on peroxide intermediates in a nonheme iron enzyme.,Katona G, Carpentier P, Niviere V, Amara P, Adam V, Ohana J, Tsanov N, Bourgeois D Science. 2007 Apr 20;316(5823):449-53. PMID:17446401^[2]

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

References

↑ Lombard M, Fontecave M, Touati D, Niviere V. Reaction of the desulfoferrodoxin from Desulfoarculus baarsii with superoxide anion. Evidence for a superoxide reductase activity. J Biol Chem. 2000 Jan 7;275(1):115-21. PMID:10617593
↑ Katona G, Carpentier P, Niviere V, Amara P, Adam V, Ohana J, Tsanov N, Bourgeois D. Raman-assisted crystallography reveals end-on peroxide intermediates in a nonheme iron enzyme. Science. 2007 Apr 20;316(5823):449-53. PMID:17446401 doi:316/5823/449

Proteopedia Page Contributors and Editors (what is this?)

OCA

[1] Lombard M, Fontecave M, Touati D, Niviere V. Reaction of the desulfoferrodoxin from Desulfoarculus baarsii with superoxide anion. Evidence for a superoxide reductase activity. J Biol Chem. 2000 Jan 7;275(1):115-21. PMID:10617593

[2] Katona G, Carpentier P, Niviere V, Amara P, Adam V, Ohana J, Tsanov N, Bourgeois D. Raman-assisted crystallography reveals end-on peroxide intermediates in a nonheme iron enzyme. Science. 2007 Apr 20;316(5823):449-53. PMID:17446401 doi:316/5823/449

[1]

[2]

@@ Line 3: / Line 3: @@
 <StructureSection load='2ji2' size='340' side='right'caption='[[2ji2]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2ji2]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_33931 Atcc 33931]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JI2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2JI2 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2ji2]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Desulfarculus_baarsii Desulfarculus baarsii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JI2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2JI2 FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=NO3:NITRATE+ION'>NO3</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]] 1.7&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1vzg|1vzg]], [[1vzh|1vzh]], [[1vzi|1vzi]], [[2ji1|2ji1]], [[2ji3|2ji3]]</div></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=NO3:NITRATE+ION'>NO3</scene></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">dfx, rbo, Deba_2050 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=453230 ATCC 33931])</td></tr>
-<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Superoxide_reductase Superoxide reductase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.15.1.2 1.15.1.2] </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=2ji2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ji2 OCA], [https://pdbe.org/2ji2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ji2 RCSB], [https://www.ebi.ac.uk/pdbsum/2ji2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ji2 ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/DFX_DESB2 DFX_DESB2]] Catalyzes the one-electron reduction of superoxide anion radical to hydrogen peroxide at a nonheme ferrous iron center. Plays a fundamental role in case of oxidative stress via its superoxide detoxification activity.<ref>PMID:10617593</ref>
+[https://www.uniprot.org/uniprot/DFX_DESB2 DFX_DESB2] Catalyzes the one-electron reduction of superoxide anion radical to hydrogen peroxide at a nonheme ferrous iron center. Plays a fundamental role in case of oxidative stress via its superoxide detoxification activity.<ref>PMID:10617593</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 38: / Line 36: @@
 __TOC__
 </StructureSection>
-[[Category: Atcc 33931]]
+[[Category: Desulfarculus baarsii]]
 [[Category: Large Structures]]
-[[Category: Superoxide reductase]]
+[[Category: Adam V]]
-[[Category: Adam, V]]
+[[Category: Amara P]]
-[[Category: Amara, P]]
+[[Category: Bourgeois D]]
-[[Category: Bourgeois, D]]
+[[Category: Carpentier P]]
-[[Category: Carpentier, P]]
+[[Category: Katona G]]
-[[Category: Katona, G]]
+[[Category: Niviere V]]
-[[Category: Niviere, V]]
+[[Category: Ohana J]]
-[[Category: Ohana, J]]
+[[Category: Tsanov N]]
-[[Category: Tsanov, N]]
-[[Category: Detoxification]]
-[[Category: Electron transport]]
-[[Category: Intermediate trapping]]
-[[Category: Iron]]
-[[Category: Metal-binding]]
-[[Category: Microspectrophotometry]]
-[[Category: Oxidoreductase]]
-[[Category: Raman spectroscopy]]
-[[Category: Redox state]]
-[[Category: Transport]]

2ji2: Difference between revisions

Latest revision as of 14:49, 13 December 2023

X-ray structure of E114A mutant of superoxide reductase from Desulfoarculus baarsii in the native, reduced form

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

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