View source for 6gun


==Siderophore hydrolase EstB from Aspergillus nidulans==
<StructureSection load='6gun' size='340' side='right' caption='[[6gun]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6gun]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Aspergillus_nidulans Aspergillus nidulans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6GUN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6GUN FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6gun FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6gun OCA], [http://pdbe.org/6gun PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6gun RCSB], [http://www.ebi.ac.uk/pdbsum/6gun PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6gun ProSAT]</span></td></tr>
</table>
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== Publication Abstract from PubMed ==
Fungi utilize high-affinity chelators termed siderophores with chemically diverse structures to scavenge the essential nutrient iron from their surroundings. As they are among the strongest known Fe3+ binding agents, intracellular release of the heavy metal atom is facilitated by the activity of specific hydrolases. In this work, we report the characterization and x-ray structures of four siderophore esterases, AfEstB and AfSidJ from Aspergillus fumigatus, as well as AnEstB and AnEstA from Aspergillus nidulans. Even though they all display the conserved alpha/beta-hydrolase fold, we found remarkable structural and enzymatic discrepancies in their adaption to both related and chemically diverse substrates. A complex structure of AfEstB and its substrate triacetylfusarinine C gives insights into an active enzyme, with a tetrahedral coordination between the catalytic serine and the scissile ester bond.

Iron scavenging in Aspergillus species: Structural and biochemical insights into fungal siderophore esterases.,Ecker F, Haas H, Groll M, Huber E Angew Chem Int Ed Engl. 2018 Aug 1. doi: 10.1002/anie.201807093. PMID:30070018<ref>PMID:30070018</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 6gun" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Aspergillus nidulans]]
[[Category: Ecker, F]]
[[Category: Groll, M]]
[[Category: Haas, H]]
[[Category: Huber, E M]]
[[Category: Alpha/beta-hydrolase]]
[[Category: Fungi]]
[[Category: Hydrolase]]
[[Category: Hydrolysis]]
[[Category: Siderophore]]