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==Crystal structure of the complex between the flagellar motor proteins FliG and FliM.==
==Crystal structure of the complex between the flagellar motor proteins FliG and FliM.==
<StructureSection load='4fhr' size='340' side='right' caption='[[4fhr]], [[Resolution|resolution]] 1.93&Aring;' scene=''>
<StructureSection load='4fhr' size='340' side='right'caption='[[4fhr]], [[Resolution|resolution]] 1.93&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4fhr]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_43589 Atcc 43589]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FHR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4FHR FirstGlance]. <br>
<table><tr><td colspan='2'>[[4fhr]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FHR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FHR FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3ajc|3ajc]], [[1lkv|1lkv]], [[3hjl|3hjl]]</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]] 1.931&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">FliM ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2336 ATCC 43589]), fliG ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2336 ATCC 43589])</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=4fhr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fhr OCA], [https://pdbe.org/4fhr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fhr RCSB], [https://www.ebi.ac.uk/pdbsum/4fhr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fhr ProSAT]</span></td></tr>
<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=4fhr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fhr OCA], [http://pdbe.org/4fhr PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4fhr RCSB], [http://www.ebi.ac.uk/pdbsum/4fhr PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4fhr ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/FLIM_THEMA FLIM_THEMA]] FliM is one of three proteins (FliG, FliN, FliM) that forms the rotor-mounted switch complex (C ring), located at the base of the basal body. This complex interacts with the CheY and CheX chemotaxis proteins, in addition to contacting components of the motor that determine the direction of flagellar rotation (By similarity). [[http://www.uniprot.org/uniprot/FLIG_THEMA FLIG_THEMA]] One of the proteins that forms a switch complex that is proposed to be located at the base of the basal body. This complex interacts with chemotaxis proteins (such as CheY) in addition to contacting components of the motor that determine the direction of flagellar rotation (By similarity).
[https://www.uniprot.org/uniprot/FLIM_THEMA FLIM_THEMA] FliM is one of three proteins (FliG, FliN, FliM) that forms the rotor-mounted switch complex (C ring), located at the base of the basal body. This complex interacts with the CheY and CheX chemotaxis proteins, in addition to contacting components of the motor that determine the direction of flagellar rotation (By similarity).
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The flagellar motor is one type of propulsion device of motile bacteria. The cytoplasmic ring (C-ring) of the motor interacts with the stator to generate torque in clockwise and counterclockwise directions. The C-ring is composed of three proteins, FliM, FliN, and FliG. Together they form the "switch complex" and regulate switching and torque generation. Here we report the crystal structure of the middle domain of FliM in complex with the middle and C-terminal domains of FliG that shows the interaction surface and orientations of the proteins. In the complex, FliG assumes a compact conformation in which the middle and C-terminal domains (FliG(MC)) collapse and stack together similarly to the recently published structure of a mutant of FliG(MC) with a clockwise rotational bias. This intramolecular stacking of the domains is distinct from the intermolecular stacking seen in other structures of FliG. We fit the complex structure into the three-dimensional reconstructions of the motor and propose that the cytoplasmic ring is assembled from 34 FliG and FliM molecules in a 1:1 fashion.


Structure of flagellar motor proteins in complex allows for insights into motor structure and switching.,Vartanian AS, Paz A, Fortgang EA, Abramson J, Dahlquist FW J Biol Chem. 2012 Oct 19;287(43):35779-83. doi: 10.1074/jbc.C112.378380. Epub, 2012 Aug 15. PMID:22896702<ref>PMID:22896702</ref>
==See Also==
 
*[[Flagellar protein 3D structures|Flagellar protein 3D structures]]
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4fhr" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Atcc 43589]]
[[Category: Large Structures]]
[[Category: Abramson, J]]
[[Category: Thermotoga maritima]]
[[Category: Dahlquist, F W]]
[[Category: Abramson J]]
[[Category: Fortgang, E A]]
[[Category: Dahlquist FW]]
[[Category: Paz, A]]
[[Category: Fortgang EA]]
[[Category: Vartanian, A S]]
[[Category: Paz A]]
[[Category: Flagellar motor]]
[[Category: Vartanian AS]]
[[Category: Motor protein]]

Latest revision as of 18:25, 14 March 2024

Crystal structure of the complex between the flagellar motor proteins FliG and FliM.Crystal structure of the complex between the flagellar motor proteins FliG and FliM.

Structural highlights

4fhr is a 2 chain structure with sequence from Thermotoga maritima. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.931Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

FLIM_THEMA FliM is one of three proteins (FliG, FliN, FliM) that forms the rotor-mounted switch complex (C ring), located at the base of the basal body. This complex interacts with the CheY and CheX chemotaxis proteins, in addition to contacting components of the motor that determine the direction of flagellar rotation (By similarity).

See Also

4fhr, resolution 1.93Å

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