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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[8ajk]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8AJK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8AJK FirstGlance]. <br>
<table><tr><td colspan='2'>[[8ajk]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Staphylococcus_aureus Staphylococcus aureus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8AJK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8AJK FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NI:NICKEL+(II)+ION'>NI</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]] 1.6&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NI:NICKEL+(II)+ION'>NI</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=8ajk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8ajk OCA], [https://pdbe.org/8ajk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8ajk RCSB], [https://www.ebi.ac.uk/pdbsum/8ajk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8ajk ProSAT]</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=8ajk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8ajk OCA], [https://pdbe.org/8ajk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8ajk RCSB], [https://www.ebi.ac.uk/pdbsum/8ajk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8ajk ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[https://www.uniprot.org/uniprot/A0A6B5CJS8_STAAU A0A6B5CJS8_STAAU]  
[https://www.uniprot.org/uniprot/A0A6B5CJS8_STAAU A0A6B5CJS8_STAAU]  
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The major pathogen Staphylococcus aureus has to cope with host-derived oxidative stress to cause infections in humans. Here, we report that S. aureus tolerates high concentrations of hypothiocyanous acid (HOSCN), a key antimicrobial oxidant produced in the respiratory tract. We discovered that the flavoprotein disulfide reductase (FDR) MerA protects S. aureus from this oxidant by functioning as a HOSCN reductase, with its deletion sensitizing bacteria to HOSCN. Crystal structures of homodimeric MerA (2.4 A) with a Cys(43) -Cys(48) intramolecular disulfide, and reduced MerACys(43) S (1.6 A) showed the FAD cofactor close to the active site, supporting that MerA functions as a group I FDR. MerA is controlled by the redox-sensitive repressor HypR, which we show to be oxidized to intermolecular disulfides under HOSCN stress, resulting in its inactivation and derepression of merA transcription to promote HOSCN tolerance. Our study highlights the HOSCN tolerance of S. aureus and characterizes the structure and function of MerA as a major HOSCN defense mechanism. Crippling the capacity to respond to HOSCN may be a novel strategy for treating S. aureus infections.
MerA functions as a hypothiocyanous acid reductase and defense mechanism in Staphylococcus aureus.,Shearer HL, Loi VV, Weiland P, Bange G, Altegoer F, Hampton MB, Antelmann H, Dickerhof N Mol Microbiol. 2023 Feb 13. doi: 10.1111/mmi.15035. PMID:36779383<ref>PMID:36779383</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8ajk" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>

Latest revision as of 08:12, 7 February 2024

Crystal structure of a C43S variant from the disulfide reductase MerA from Staphylococcus aureus

8ajk, resolution 1.60Å

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