View source for 5xt6


==A sulfur-transferring catalytic intermediate of SufS-SufU complex from Bacillus subtilis==
<StructureSection load='5xt6' size='340' side='right'caption='[[5xt6]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5xt6]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_subtilis_subsp._subtilis_str._168 Bacillus subtilis subsp. subtilis str. 168]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5XT6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5XT6 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.5&#8491;</td></tr>
<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=PDA:2-[(3-HYDROXY-2-METHYL-5-PHOSPHONOOXYMETHYL-PYRIDIN-4-YLMETHYL)-AMINO]-PROPIONIC+ACID'>PDA</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=5xt6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5xt6 OCA], [https://pdbe.org/5xt6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5xt6 RCSB], [https://www.ebi.ac.uk/pdbsum/5xt6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5xt6 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/SUFU_BACSU SUFU_BACSU] Its function is controversial. Has been generally assumed to be an iron-sulfur cluster assembly scaffold protein (PubMed:20097860, PubMed:21236255), but more recent evidence suggest it is a sulfurtransferase rather than a scaffold assembly protein (PubMed:24321018). Has been shown to bind low levels of a labile, air-sensitive Fe-S cluster; this can be assembled under anaerobic conditions from FeCl(3) and Li(2)S. Has been shown to be able to transfer this Fe-S cluster to an acceptor protein. Stimulates the cysteine desulfurase activity of SufS, for which it acts as a second substrate. Alkylation eliminates its ability to stimulate SufS. A mixture of SufS, SufU, Fra and L-cysteine is able to reconstitute Fe-S clusters on apo-aconitase (citB), reconstituting aconitase activity.<ref>PMID:20097860</ref> <ref>PMID:20822158</ref> <ref>PMID:21236255</ref> <ref>PMID:21744456</ref> <ref>PMID:24321018</ref> 
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== Publication Abstract from PubMed ==
SufU is a zinc-containing protein involved in mobilization of sulfur from SufS for iron-sulfur cluster biogenesis of Bacillus subtilis. Structural basis for the sulfur transfer in SufS-SufU complex was revealed. A zinc-ligand exchange reaction upon SufS-SufU complexation provides a free thiol from Cys41 of SufU as a sulfur acceptor.

Zinc-Ligand Swapping Mediated Complex Formation and Sulfur Transfer between SufS and SufU for Iron-Sulfur Cluster Biogenesis in Bacillus subtilis.,Fujishiro T, Terahata T, Kunichika K, Yokoyama N, Maruyama C, Asai K, Takahashi Y J Am Chem Soc. 2017 Dec 13. doi: 10.1021/jacs.7b11307. PMID:29235855<ref>PMID:29235855</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 5xt6" style="background-color:#fffaf0;"></div>

==See Also==
*[[Cysteine desulfurase 3D structures|Cysteine desulfurase 3D structures]]
*[[Sulfurtransferase|Sulfurtransferase]]
== References ==
<references/>
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</StructureSection>
[[Category: Bacillus subtilis subsp. subtilis str. 168]]
[[Category: Large Structures]]
[[Category: Fujishiro T]]
[[Category: Kunichika K]]
[[Category: Takahashi Y]]