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==Solution NMR Structure of The Haemophilus Influenzae Iron-Sulfur Cluster Assembly Protein U (IscU) with Zinc Bound at the Active Site. Northeast Structural Genomics Consortium Target IR24. This protein is not apo, it is a model without zinc binding constraints.==
==Solution NMR Structure of The Haemophilus Influenzae Iron-Sulfur Cluster Assembly Protein U (IscU) with Zinc Bound at the Active Site. Northeast Structural Genomics Consortium Target IR24. This protein is not apo, it is a model without zinc binding constraints.==
<StructureSection load='1q48' size='340' side='right'caption='[[1q48]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
<StructureSection load='1q48' size='340' side='right'caption='[[1q48]]' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1q48]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacterium_influenzae"_lehmann_and_neumann_1896 "bacterium influenzae" lehmann and neumann 1896]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Q48 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1Q48 FirstGlance]. <br>
<table><tr><td colspan='2'>[[1q48]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Haemophilus_influenzae Haemophilus influenzae]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Q48 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1Q48 FirstGlance]. <br>
</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">HI0377 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=727 "Bacterium influenzae" Lehmann and Neumann 1896])</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='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1q48 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1q48 OCA], [http://pdbe.org/1q48 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1q48 RCSB], [http://www.ebi.ac.uk/pdbsum/1q48 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1q48 ProSAT], [http://www.topsan.org/Proteins/NESGC/1q48 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=1q48 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1q48 OCA], [https://pdbe.org/1q48 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1q48 RCSB], [https://www.ebi.ac.uk/pdbsum/1q48 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1q48 ProSAT], [https://www.topsan.org/Proteins/NESGC/1q48 TOPSAN]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/ISCU_HAEIN ISCU_HAEIN]] A scaffold on which IscS assembles Fe-S clusters. Subsequently gives the nascent cluster to other proteins. It is likely that Fe-S cluster coordination is flexible as the role of this complex is to build and then hand off Fe-S clusters (By similarity).  
[https://www.uniprot.org/uniprot/ISCU_HAEIN ISCU_HAEIN] A scaffold on which IscS assembles Fe-S clusters. Subsequently gives the nascent cluster to other proteins. It is likely that Fe-S cluster coordination is flexible as the role of this complex is to build and then hand off Fe-S clusters (By similarity).
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1q48 ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1q48 ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
IscU is a highly conserved protein that serves as the scaffold for IscS-mediated assembly of iron-sulfur ([Fe-S]) clusters. We report the NMR solution structure of monomeric Haemophilus influenzae IscU with zinc bound at the [Fe-S] cluster assembly site. The compact core of the globular structure has an alpha-beta sandwich architecture with a three-stranded antiparallel beta-sheet and four alpha-helices. A nascent helix is located N-terminal to the core structure. The zinc is ligated by three cysteine residues and one histidine residue that are located in and near conformationally dynamic loops at one end of the IscU structure. Removal of the zinc metal by chelation results in widespread loss of structure in the apo form. The zinc-bound IscU may be a good model for iron-loaded IscU and may demonstrate structural features found in the [Fe-S] cluster bound form. Structural and functional similarities, genomic context in operons containing other homologous genes, and distributions of conserved surface residues support the hypothesis that IscU protein domains are homologous (i.e. derived from a common ancestor) with the SufE/YgdK family of [Fe-S] cluster assembly proteins.
Solution NMR structure of the iron-sulfur cluster assembly protein U (IscU) with zinc bound at the active site.,Ramelot TA, Cort JR, Goldsmith-Fischman S, Kornhaber GJ, Xiao R, Shastry R, Acton TB, Honig B, Montelione GT, Kennedy MA J Mol Biol. 2004 Nov 19;344(2):567-83. PMID:15522305<ref>PMID:15522305</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1q48" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Bacterium influenzae lehmann and neumann 1896]]
[[Category: Haemophilus influenzae]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Acton, T B]]
[[Category: Acton TB]]
[[Category: Cort, J R]]
[[Category: Cort JR]]
[[Category: Kennedy, M A]]
[[Category: Kennedy MA]]
[[Category: Montelione, G T]]
[[Category: Montelione GT]]
[[Category: Structural genomic]]
[[Category: Ramelot TA]]
[[Category: Ramelot, T A]]
[[Category: Shastry R]]
[[Category: Shastry, R]]
[[Category: Xiao R]]
[[Category: Xiao, R]]
[[Category: Beta strand]]
[[Category: Alpha helix]]
[[Category: Iron-sulfur cluster binding]]
[[Category: Nesg]]
[[Category: PSI, Protein structure initiative]]
[[Category: Three conserved cy]]
[[Category: Unknown function]]

Latest revision as of 06:01, 17 April 2024

Solution NMR Structure of The Haemophilus Influenzae Iron-Sulfur Cluster Assembly Protein U (IscU) with Zinc Bound at the Active Site. Northeast Structural Genomics Consortium Target IR24. This protein is not apo, it is a model without zinc binding constraints.

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