1xvx

<table><tr><td colspan='2'>[[1xvx]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacterium_enterocoliticum"_schleifstein_and_coleman_1939 "bacterium enterocoliticum" schleifstein and coleman 1939]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1XVX OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1XVX FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CO3:CARBONATE+ION'>CO3</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">yfuA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=630 "Bacterium enterocoliticum" Schleifstein and Coleman 1939])</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=1xvx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xvx OCA], [http://pdbe.org/1xvx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1xvx RCSB], [http://www.ebi.ac.uk/pdbsum/1xvx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1xvx ProSAT]</span></td></tr>

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== Publication Abstract from PubMed ==

The uptake of the element iron is vital for the survival of most organisms. Numerous pathogenic Gram-negative bacteria utilize a periplasm-to-cytosol ATP-binding cassette transport pathway to transport this essential atom in to the cell. In this study, we investigated the Yersinia enterocolitica (YfuA) and Serratia marcescens (SfuA) iron-binding periplasmic proteins. We have determined the 1.8-angstroms structures of iron-loaded (YfuA) and iron-free (SfuA) forms of this class of proteins. Although the sequence of these proteins varies considerably from the other members of the transferrin structural superfamily, they adopt the same three-dimensional fold. The iron-loaded YfuA structure illustrates the unique nature of this new class of proteins in that they are able to octahedrally coordinate the ferric ion in the absence of a bound anion. The iron-free SfuA structure contains a bound citrate anion in the iron-binding cleft that tethers the N- and C-terminal domains of the apo protein and stabilizes the partially open structure.

Novel anion-independent iron coordination by members of a third class of bacterial periplasmic ferric ion-binding proteins.,Shouldice SR, McRee DE, Dougan DR, Tari LW, Schryvers AB J Biol Chem. 2005 Feb 18;280(7):5820-7. Epub 2004 Dec 2. PMID:15576371<ref>PMID:15576371</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 1xvx" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Bacterium enterocoliticum schleifstein and coleman 1939]]

[[Category: Dougan, D R]]

[[Category: McRee, D E]]

[[Category: Schryvers, A B]]

[[Category: Shouldice, S R]]

[[Category: Tari, L W]]

[[Category: Iron binding protein]]

[[Category: Periplasmic iron binding protein]]