6mr2

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'''Unreleased structure'''
 
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The entry 6mr2 is ON HOLD until Paper Publication
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==E. coli cysteine desulfurase SufS with a cysteine persulfide intermediate==
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<StructureSection load='6mr2' size='340' side='right'caption='[[6mr2]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[6mr2]] is a 1 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=6MR2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6MR2 FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.404&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CSS:S-MERCAPTOCYSTEINE'>CSS</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6mr2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6mr2 OCA], [https://pdbe.org/6mr2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6mr2 RCSB], [https://www.ebi.ac.uk/pdbsum/6mr2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6mr2 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/SUFS_ECOLI SUFS_ECOLI] Cysteine desulfurases mobilize the sulfur from L-cysteine to yield L-alanine, an essential step in sulfur metabolism for biosynthesis of a variety of sulfur-containing biomolecules. Component of the suf operon, which is activated and required under specific conditions such as oxidative stress and iron limitation. Acts as a potent selenocysteine lyase in vitro, that mobilizes selenium from L-selenocysteine. Selenocysteine lyase activity is however unsure in vivo.<ref>PMID:10829016</ref> <ref>PMID:12089140</ref> <ref>PMID:11997471</ref> <ref>PMID:12876288</ref> <ref>PMID:12941942</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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SufS is a type II cysteine desulfurase and acts as the initial step in the Suf Fe-S cluster assembly pathway. In Escherichia coli this pathway is utilized under conditions of oxidative stress and is resistant to reactive oxygen species. Mechanistically this means SufS must shift between protecting a covalent persulfide intermediate and making it available for transfer to the next protein partner in the pathway, SufE. Here, we report five x-ray crystal structures of SufS including a new structure of SufS containing an inward facing persulfide intermediate on C364. Additional structures of SufS variants with substitutions at the dimer interface show changes in dimer geometry and suggest a conserved beta-hairpin structure plays a role in mediating interactions with SufE. These new structures, along with previous HDX-MS and biochemical data identify an interaction network capable of communication between active-sites of the SufS dimer coordinating the shift between desulfurase and transpersulfurase activities.
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Authors:
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Structural evidence for dimer-interface driven regulation of the type II cysteine desulfurase, SufS.,Dunkle JA, Bruno M, Outten FW, Frantom PA Biochemistry. 2018 Dec 20. doi: 10.1021/acs.biochem.8b01122. PMID:30571100<ref>PMID:30571100</ref>
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Description:
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[Category: Unreleased Structures]]
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</div>
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<div class="pdbe-citations 6mr2" style="background-color:#fffaf0;"></div>
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==See Also==
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*[[Cysteine desulfurase 3D structures|Cysteine desulfurase 3D structures]]
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*[[Selenocysteine lyase|Selenocysteine lyase]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Escherichia coli K-12]]
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[[Category: Large Structures]]
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[[Category: Dunkle JA]]
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[[Category: Frantom PA]]

Current revision

E. coli cysteine desulfurase SufS with a cysteine persulfide intermediate

PDB ID 6mr2

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