1CEY

ASSIGNMENTS, SECONDARY STRUCTURE, GLOBAL FOLD, AND DYNAMICS OF CHEMOTAXIS Y PROTEIN USING THREE-AND FOUR-DIMENSIONAL HETERONUCLEAR (13C,15N) NMR SPECTROSCOPY


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 46 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Assignments, secondary structure, global fold, and dynamics of chemotaxis Y protein using three- and four-dimensional heteronuclear (13C,15N) NMR spectroscopy.

Moy, F.J.Lowry, D.F.Matsumura, P.Dahlquist, F.W.Krywko, J.E.Domaille, P.J.

(1994) Biochemistry 33: 10731-10742


  • PubMed Abstract: 
  • NMR spectroscopy has been used to study recombinant Escherichia coli CheY, a 128-residue protein involved in regulating bacterial chemotaxis. Heteronuclear three- and four-dimensional (3D and 4D) experiments have provided sequence-specific resonance ...

    NMR spectroscopy has been used to study recombinant Escherichia coli CheY, a 128-residue protein involved in regulating bacterial chemotaxis. Heteronuclear three- and four-dimensional (3D and 4D) experiments have provided sequence-specific resonance assignments and quantitation of short-, medium-, and long-range distance restraints from nuclear Overhauser enhancement (NOE) intensities. These distance restraints were further supplemented with measurements of three-bond scalar coupling constants to define the local dihedral angles, and with the identification of amide protons undergoing slow solvent exchange from which hydrogen-bonding patterns were identified. The current model structure shows the same global fold of CheY as existing X-ray structures (Volz & Matsumura, 1991; Stock et al. 1993) with a (beta/alpha)5 motif of five parallel beta-strands at the central core surrounded by three alpha-helices on one face and with two on the opposite side. Heteronuclear 15N-1H relaxation experiments are interpreted to show portions of the protein structure in the Mg2+ binding loop are ill-defined because of slow motion (chemical exchange) on the NMR time scale. Moreover, the presence of Mg2+ disrupts the salt bridge between the highly conserved Lys-109 and Asp-57, the site of phosphorylation.


    Organizational Affiliation

    DuPont Merck Pharmaceutical Company, Wilmington, Delaware 19880-0328.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CHEY
A
128Escherichia coli (strain K12)Gene Names: cheY
Find proteins for P0AE67 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AE67
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 46 
  • Olderado: 1CEY Olderado
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
X-PLORrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-02-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance