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==Solution structure of Iron-Sulfur cluster assembly protein IscU from Bacillus subtilis, with Zinc bound at the active site. Northeast Structural Genomics Consortium Target SR17==
==Solution structure of Iron-Sulfur cluster assembly protein IscU from Bacillus subtilis, with Zinc bound at the active site. Northeast Structural Genomics Consortium Target SR17==
<StructureSection load='1xjs' size='340' side='right'caption='[[1xjs]], [[NMR_Ensembles_of_Models | 10 NMR models]]' scene=''>
<StructureSection load='1xjs' size='340' side='right'caption='[[1xjs]]' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1xjs]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/"vibrio_subtilis"_ehrenberg_1835 "vibrio subtilis" ehrenberg 1835]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1XJS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1XJS FirstGlance]. <br>
<table><tr><td colspan='2'>[[1xjs]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1XJS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1XJS FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">nifU ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1423 "Vibrio subtilis" Ehrenberg 1835])</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><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=1xjs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xjs OCA], [https://pdbe.org/1xjs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1xjs RCSB], [https://www.ebi.ac.uk/pdbsum/1xjs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1xjs ProSAT], [https://www.topsan.org/Proteins/NESGC/1xjs TOPSAN]</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=1xjs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xjs OCA], [https://pdbe.org/1xjs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1xjs RCSB], [https://www.ebi.ac.uk/pdbsum/1xjs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1xjs ProSAT], [https://www.topsan.org/Proteins/NESGC/1xjs TOPSAN]</span></td></tr>
</table>
</table>
== Function ==
== 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>
[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>  
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Vibrio subtilis ehrenberg 1835]]
[[Category: Bacillus subtilis]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Cort, J R]]
[[Category: Cort JR]]
[[Category: Kennedy, M A]]
[[Category: Kennedy MA]]
[[Category: Kornhaber, G J]]
[[Category: Kornhaber GJ]]
[[Category: Montelione, G T]]
[[Category: Montelione GT]]
[[Category: Structural genomic]]
[[Category: Ramelot TA]]
[[Category: Ramelot, T A]]
[[Category: Swapna GVT]]
[[Category: Swapna, G V.T]]
[[Category: Autostructure]]
[[Category: Iron-sulfur]]
[[Category: Nesg]]
[[Category: Nifu-like]]
[[Category: PSI, Protein structure initiative]]
[[Category: Sr17]]
[[Category: Unknown function]]
[[Category: Zinc]]
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