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4q00

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==Crystal structure of an S150A mutant of the E. coli FeoB G-domain==
==Crystal structure of an S150A mutant of the E. coli FeoB G-domain==
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<StructureSection load='4q00' size='340' side='right' caption='[[4q00]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
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<StructureSection load='4q00' size='340' side='right'caption='[[4q00]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[4q00]] is a 3 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4Q00 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4Q00 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[4q00]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_K-12 Escherichia coli K-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4Q00 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4Q00 FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1&#8491;</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3hyr|3hyr]]</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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<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=4q00 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4q00 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4q00 RCSB], [http://www.ebi.ac.uk/pdbsum/4q00 PDBsum]</span></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4q00 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4q00 OCA], [https://pdbe.org/4q00 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4q00 RCSB], [https://www.ebi.ac.uk/pdbsum/4q00 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4q00 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/FEOB_ECOLI FEOB_ECOLI]] GTP-driven Fe(2+) uptake system.<ref>PMID:8407793</ref> <ref>PMID:12446835</ref>
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[https://www.uniprot.org/uniprot/FEOB_ECOLI FEOB_ECOLI] GTP-driven Fe(2+) uptake system.<ref>PMID:8407793</ref> <ref>PMID:12446835</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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GDP release from GTPases is usually extremely slow and is in general assisted by external factors, such as association with guanine exchange factors or membrane-embedded GPCRs (G protein-coupled receptors), which accelerate the release of GDP by several orders of magnitude. Intrinsic factors can also play a significant role; a single amino acid substitution in one of the guanine nucleotide recognition motifs, G5, results in a drastically altered GDP release rate, indicating that the sequence composition of this motif plays an important role in spontaneous GDP release. In the present study, we used the GTPase domain from EcNFeoB (Escherichia coli FeoB) as a model and applied biochemical and structural approaches to evaluate the role of all the individual residues in the G5 loop. Our study confirms that several of the residues in the G5 motif have an important role in the intrinsic affinity and release of GDP. In particular, a T151A mutant (third residue of the G5 loop) leads to a reduced nucleotide affinity and provokes a drastically accelerated dissociation of GDP.
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Exploring the correlation between the sequence composition of the nucleotide binding G5 loop of the FeoB GTPase domain (NFeoB) and intrinsic rate of GDP release.,Guilfoyle AP, Deshpande CN, Schenk G, Maher MJ, Jormakka M Biosci Rep. 2014 Dec 12;34(6):e00158. doi: 10.1042/BSR20140152. PMID:25374115<ref>PMID:25374115</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Deshpande, C N]]
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[[Category: Escherichia coli K-12]]
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[[Category: Guilfoyle, A P]]
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[[Category: Large Structures]]
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[[Category: Jormakka, M]]
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[[Category: Deshpande CN]]
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[[Category: G protein]]
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[[Category: Guilfoyle AP]]
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[[Category: Gtp binding]]
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[[Category: Jormakka M]]
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[[Category: Gtpase]]
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[[Category: Iron transport]]
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[[Category: Metal transport]]
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[[Category: Transmembrane]]
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Current revision

Crystal structure of an S150A mutant of the E. coli FeoB G-domain

PDB ID 4q00

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