View source for 4hyn


==X-ray crystal structure of Thermotoga maritima FliY==
<StructureSection load='4hyn' size='340' side='right'caption='[[4hyn]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4hyn]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermotoga_maritima_MSB8 Thermotoga maritima MSB8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4HYN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4HYN 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]] 2.5&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</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=4hyn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hyn OCA], [https://pdbe.org/4hyn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4hyn RCSB], [https://www.ebi.ac.uk/pdbsum/4hyn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4hyn ProSAT]</span></td></tr>
</table>
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== Publication Abstract from PubMed ==
Rotating flagella propel bacteria toward favorable environments. Sense of rotation is determined by the intracellular response regulator CheY, which when phosphorylated (CheY-P) interacts directly with the flagellar motor. In many different types of bacteria the CheC/CheX/FliY (CXY) family of phosphatases terminates the CheY-P signal. Unlike CheC and CheX, FliY is localized in the flagellar switch complex, which also contains the stator-coupling protein FliG and the target of CheY-P, FliM. The 2.5 angstrom resolution crystal structure of the FliY catalytic domain from Thermotoga maritima bears strong resemblance to the middle domain of FliM. Regions of FliM that mediate contacts within the rotor compose the phosphatase active sites in FliY. Despite the similarity between FliY and FliM, FliY does not bind FliG and thus is unlikely to be a substitute for FliM in the center of the switch complex. Solution studies indicate that FliY dimerizes through its C-terminal domains, which resemble the E. coli switch complex component FliN. FliY differs topologically from the E.coli chemotaxis phosphatase CheZ, but appears to utilize similar structural motifs for CheY dephosphorylation in close analogy to CheX. Recognition properties and phosphatase activities of site-directed mutants identify two pseudosymmetric active sites in FliY (Glu35/Asn38 and Glu132/Asn135), with the second site (Glu132/Asn135) being more active. A putative N-terminal CheY binding domain conserved with FliM is not required for binding CheY-P or phosphatase activity.

Structure and activity of the flagellar rotor protein FliY: A member of the CheC phosphatase family.,Sircar R, Greenswag AR, Bilwes AM, Gonzalez-Bonet G, Crane BR J Biol Chem. 2013 Mar 26. PMID:23532838<ref>PMID:23532838</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 4hyn" style="background-color:#fffaf0;"></div>

==See Also==
*[[Flagellar protein 3D structures|Flagellar protein 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Thermotoga maritima MSB8]]
[[Category: Bilwes AM]]
[[Category: Crane BR]]
[[Category: Sircar R]]