3b47: Difference between revisions

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<StructureSection load='3b47' size='340' side='right'caption='[[3b47]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
<StructureSection load='3b47' size='340' side='right'caption='[[3b47]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3b47]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_51573 Atcc 51573]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3B47 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=3B47 FirstGlance]. <br>
<table><tr><td colspan='2'>[[3b47]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Geobacter_sulfurreducens Geobacter sulfurreducens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3B47 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3B47 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene></td></tr>
</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&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3b42|3b42]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene></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=3b47 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3b47 OCA], [http://pdbe.org/3b47 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3b47 RCSB], [http://www.ebi.ac.uk/pdbsum/3b47 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3b47 ProSAT]</span></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=3b47 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3b47 OCA], [https://pdbe.org/3b47 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3b47 RCSB], [https://www.ebi.ac.uk/pdbsum/3b47 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3b47 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q74FM4_GEOSL Q74FM4_GEOSL]
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</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=3b47 ConSurf].
</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=3b47 ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Periplasmic sensor domains from two methyl-accepting chemotaxis proteins from Geobacter sulfurreducens (encoded by genes GSU0935 and GSU0582) were expressed in Escherichia coli. The sensor domains were isolated, purified, characterized in solution, and their crystal structures were determined. In the crystal, both sensor domains form swapped dimers and show a PAS-type fold. The swapped segment consists of two helices of about 45 residues at the N terminus with the hemes located between the two monomers. In the case of the GSU0582 sensor, the dimer contains a crystallographic 2-fold symmetry and the heme is coordinated by an axial His and a water molecule. In the case of the GSU0935 sensor, the crystals contain a non-crystallographic dimer, and surprisingly, the coordination of the heme in each monomer is different; monomer A heme has His-Met ligation and monomer B heme has His-water ligation as found in the GSU0582 sensor. The structures of these sensor domains are the first structures of PAS domains containing covalently bound heme. Optical absorption, electron paramagnetic resonance and NMR spectroscopy have revealed that the heme groups of both sensor domains are high-spin and low-spin in the oxidized and reduced forms, respectively, and that the spin-state interconversion involves a heme axial ligand replacement. Both sensor domains bind NO in their ferric and ferrous forms but bind CO only in the reduced form. The binding of both NO and CO occurs via an axial ligand exchange process, and is fully reversible. The reduction potentials of the sensor domains differ by 95 mV (-156 mV and -251 mV for sensors GSU0582 and GSU0935, respectively). The swapped dimerization of these sensor domains and redox-linked ligand switch might be related to the mechanism of signal transduction by these chemotaxis proteins.
Structures and solution properties of two novel periplasmic sensor domains with c-type heme from chemotaxis proteins of Geobacter sulfurreducens: implications for signal transduction.,Pokkuluri PR, Pessanha M, Londer YY, Wood SJ, Duke NE, Wilton R, Catarino T, Salgueiro CA, Schiffer M J Mol Biol. 2008 Apr 11;377(5):1498-517. Epub 2008 Feb 8. PMID:18329666<ref>PMID:18329666</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3b47" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Chemotaxis protein 3D structures|Chemotaxis protein 3D structures]]
*[[Chemotaxis protein 3D structures|Chemotaxis protein 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Atcc 51573]]
[[Category: Geobacter sulfurreducens]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Pokkuluri, P R]]
[[Category: Pokkuluri PR]]
[[Category: Schiffer, M]]
[[Category: Schiffer M]]
[[Category: C-type heme containing sensor]]
[[Category: Chemotaxis]]
[[Category: Geobacter sulfurreducen]]
[[Category: Pas domain]]
[[Category: Signaling protein]]
[[Category: Unknown function]]

Latest revision as of 12:27, 21 February 2024

Periplasmic sensor domain of chemotaxis protein GSU0582Periplasmic sensor domain of chemotaxis protein GSU0582

Structural highlights

3b47 is a 1 chain structure with sequence from Geobacter sulfurreducens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

Q74FM4_GEOSL

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

3b47, resolution 2.00Å

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