View source for 4rb0


==Crystal structure of Magnetospirillum gryphiswaldense MSR-1 SeMet-Apo-Fur==
<StructureSection load='4rb0' size='340' side='right'caption='[[4rb0]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4rb0]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Magnetospirillum_gryphiswaldense_MSR-1_v2 Magnetospirillum gryphiswaldense MSR-1 v2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4RB0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4RB0 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]] 1.85&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FLC:CITRATE+ANION'>FLC</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=4rb0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4rb0 OCA], [https://pdbe.org/4rb0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4rb0 RCSB], [https://www.ebi.ac.uk/pdbsum/4rb0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4rb0 ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Ferric uptake regulator (Fur) plays a key role in the iron homeostasis of prokaryotes, such as bacterial pathogens, but the molecular mechanisms and structural basis of Fur-DNA binding remain incompletely understood. Here, we report high-resolution structures of Magnetospirillum gryphiswaldense MSR-1 Fur in four different states: apo-Fur, holo-Fur, the Fur-feoAB1 operator complex and the Fur-Pseudomonas aeruginosa Fur box complex. Apo-Fur is a transition metal ion-independent dimer whose binding induces profound conformational changes and confers DNA-binding ability. Structural characterization, mutagenesis, biochemistry and in vivo data reveal that Fur recognizes DNA by using a combination of base readout through direct contacts in the major groove and shape readout through recognition of the minor-groove electrostatic potential by lysine. The resulting conformational plasticity enables Fur binding to diverse substrates. Our results provide insights into metal ion activation and substrate recognition by Fur that suggest pathways to engineer magnetotactic bacteria and antipathogenic drugs.

Mechanistic insights into metal ion activation and operator recognition by the ferric uptake regulator.,Deng Z, Wang Q, Liu Z, Zhang M, Machado AC, Chiu TP, Feng C, Zhang Q, Yu L, Qi L, Zheng J, Wang X, Huo X, Qi X, Li X, Wu W, Rohs R, Li Y, Chen Z Nat Commun. 2015 Jul 2;6:7642. doi: 10.1038/ncomms8642. PMID:26134419<ref>PMID:26134419</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4rb0" style="background-color:#fffaf0;"></div>
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Magnetospirillum gryphiswaldense MSR-1 v2]]
[[Category: Chen Z]]
[[Category: Deng Z]]