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1c4w

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Revision as of 08:08, 29 November 2017

1.9 A STRUCTURE OF A-THIOPHOSPHONATE MODIFIED CHEY D57C

Structural highlights

1c4w is a 1 chain structure with sequence from "bacillus_coli"_migula_1895 "bacillus coli" migula 1895. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
NonStd Res:
Related:	3chy
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[CHEY_ECOLI] Involved in the transmission of sensory signals from the chemoreceptors to the flagellar motors. In its active (phosphorylated or acetylated) form, CheY exhibits enhanced binding to a switch component, FliM, at the flagellar motor which induces a change from counterclockwise to clockwise flagellar rotation. Overexpression of CheY in association with MotA and MotB improves motility of a ycgR disruption, suggesting there is an interaction (direct or indirect) between the c-di-GMP-binding flagellar brake protein and the flagellar stator.^[1]

Evolutionary Conservation

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

Publication Abstract from PubMed

To structurally characterize the activated state of the transiently phosphorylated signal transduction protein CheY, we have constructed an alpha-thiophosphonate derivative of the CheY D57C point mutant and determined its three-dimensional structure at 1.85 A resolution. We have also characterized this analogue with high-resolution NMR and studied its binding to a peptide derived from FliM, CheY's target component of the flagellar motor. The chemically modified derivative, phosphono-CheY, exhibits many of the chemical properties of phosphorylated wild-type CheY, except that it is indefinitely stable. Electron density for the alpha-thiophosphonate substitution is clear and readily interpretable; omit refinement density at the phosphorus atom is greater than 10sigma. The molecule shows a number of localized conformational changes that are believed to constitute the postphosphorylation activation events. The most obvious of these changes include movement of the side chain of the active site base, Lys 109, and a predominately buried conformation of the side chain of Tyr 106. In addition, there are a number of more subtle changes more distant from the active site involving the alpha4 and alpha5 helices. These results are consistent with our previous structural interpretations of other CheY activation mutants, and with our earlier hypotheses concerning CheY activation through propagation of structural changes away from the active site.

The 1.9 A resolution crystal structure of phosphono-CheY, an analogue of the active form of the response regulator, CheY.,Halkides CJ, McEvoy MM, Casper E, Matsumura P, Volz K, Dahlquist FW Biochemistry. 2000 May 9;39(18):5280-6. PMID:10819997^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Paul K, Nieto V, Carlquist WC, Blair DF, Harshey RM. The c-di-GMP binding protein YcgR controls flagellar motor direction and speed to affect chemotaxis by a "backstop brake" mechanism. Mol Cell. 2010 Apr 9;38(1):128-39. doi: 10.1016/j.molcel.2010.03.001. Epub 2010, Mar 25. PMID:20346719 doi:10.1016/j.molcel.2010.03.001
↑ Halkides CJ, McEvoy MM, Casper E, Matsumura P, Volz K, Dahlquist FW. The 1.9 A resolution crystal structure of phosphono-CheY, an analogue of the active form of the response regulator, CheY. Biochemistry. 2000 May 9;39(18):5280-6. PMID:10819997

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1c4w"

@@ Line 1: / Line 1: @@
 ==1.9 A STRUCTURE OF A-THIOPHOSPHONATE MODIFIED CHEY D57C==
 <StructureSection load='1c4w' size='340' side='right' caption='[[1c4w]], [[Resolution|resolution]] 1.84&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CYQ:2-AMINO-3-PHOSPHONOMETHYLSULFANYL-PROPIONIC+ACID'>CYQ</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3chy|3chy]]</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=1c4w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1c4w OCA], [http://pdbe.org/1c4w PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1c4w RCSB], [http://www.ebi.ac.uk/pdbsum/1c4w PDBsum]</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=1c4w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1c4w OCA], [http://pdbe.org/1c4w PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1c4w RCSB], [http://www.ebi.ac.uk/pdbsum/1c4w PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1c4w ProSAT]</span></td></tr>
 </table>
 == Function ==

1c4w

From Proteopedia

Revision as of 08:08, 29 November 2017

1.9 A STRUCTURE OF A-THIOPHOSPHONATE MODIFIED CHEY D57C

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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