1on1: Difference between revisions
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New page: left|200px<br /><applet load="1on1" size="450" color="white" frame="true" align="right" spinBox="true" caption="1on1, resolution 1.75Å" /> '''Bacillus Subtilis Ma... |
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== | ==Bacillus Subtilis Manganese Transport Regulator (Mntr) Bound To Manganese, AB Conformation.== | ||
The Bacillus subtilis manganese transport regulator, MntR, binds Mn2+ as | <StructureSection load='1on1' size='340' side='right'caption='[[1on1]], [[Resolution|resolution]] 1.75Å' scene=''> | ||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1on1]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ON1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ON1 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]] 1.75Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</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=1on1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1on1 OCA], [https://pdbe.org/1on1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1on1 RCSB], [https://www.ebi.ac.uk/pdbsum/1on1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1on1 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/MNTR_BACSU MNTR_BACSU] Central regulator of manganese homeostasis. In the presence of manganese, it mediates repression of the manganese transporter MntH; under low manganese conditions, it activates the transcription of the mntABCD operon. | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/on/1on1_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</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=1on1 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The Bacillus subtilis manganese transport regulator, MntR, binds Mn2+ as an effector and is a repressor of transporters that import manganese. A member of the diphtheria toxin repressor (DtxR) family of metalloregulatory proteins, MntR exhibits selectivity for Mn2+ over Fe2+. Replacement of a metal-binding residue, Asp8, with methionine (D8M) relaxes this specificity. We report here the X-ray crystal structures of wild-type MntR and the D8M mutant bound to manganese with 1.75 A and 1.61 A resolution, respectively. The 142-residue MntR homodimer has substantial structural similarity to the 226-residue DtxR but lacks the C-terminal SH3-like domain of DtxR. The metal-binding pockets of MntR and DtxR are substantially different. The cation-to-cation distance between the two manganese ions bound by MntR is 3.3 A, whereas that between the metal ions bound by DtxR is 9 A. D8M binds only a single Mn2+ per monomer, owing to alteration of the metal-binding site. The sole retained metal site adopts pseudo-hexacoordinate geometry rather than the pseudo-heptacoordinate geometry of the MntR metal sites. | |||
Structure of the manganese-bound manganese transport regulator of Bacillus subtilis.,Glasfeld A, Guedon E, Helmann JD, Brennan RG Nat Struct Biol. 2003 Aug;10(8):652-7. PMID:12847518<ref>PMID:12847518</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1on1" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Bacillus subtilis]] | [[Category: Bacillus subtilis]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Brennan | [[Category: Brennan RG]] | ||
[[Category: Glasfeld | [[Category: Glasfeld A]] | ||
[[Category: Guedon | [[Category: Guedon E]] | ||
[[Category: Helmann | [[Category: Helmann JD]] | ||
Latest revision as of 09:29, 16 August 2023
Bacillus Subtilis Manganese Transport Regulator (Mntr) Bound To Manganese, AB Conformation.
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