1SR2

Solution structure of the Escherichia coli YojN Histidine-Phosphotransferase (HPt) domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 25 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution Structure of the Escherichia coli YojN Histidine-phosphotransferase Domain and its Interaction with Cognate Phosphoryl Receiver Domains

Rogov, V.V.Bernhard, F.Loehr, F.Doetsch, V.

(2004) J.Mol.Biol. 343: 1035-1048

  • DOI: 10.1016/j.jmb.2004.08.096

  • PubMed Abstract: 
  • The Rcs signaling system in Escherichia coli controls a variety of physiological functions, including capsule synthesis, cell division and motility. The activity of the central regulator RcsB is modulated by phosphorylation through the sensor kinases ...

    The Rcs signaling system in Escherichia coli controls a variety of physiological functions, including capsule synthesis, cell division and motility. The activity of the central regulator RcsB is modulated by phosphorylation through the sensor kinases YojN and RcsC, with the YojN histidine phosphotransferase (HPt) domain representing the catalytic unit that coordinates the potentially reversible phosphotransfer reaction between the receiver domains of the RcsB and RcsC proteins. Heteronuclear high-resolution NMR spectroscopy was employed to determine the solution structure of the YojN-HPt domain and to map the interaction with its two cognate receiver domains. The solution structure of YojN-HPt exhibits a well-ordered and rigid protein core consisting of the five helices alphaI to alphaV. The helices alphaII to alphaV form a four-helix bundle signature motif common to proteins of similar function, and helix alphaI forms a cap on top of the bundle. The helix alphaII is separated by a proline induced kink into two parts with different orientations and dynamic behavior that is potentially important for complex formation with other proteins. The N-terminal part of YojN-HPt spanning the first 26 amino acid residues seems to contain neither a regular secondary structure nor a stable tertiary structure and is disordered in solution. The identified YojN-HPt recognition sites for the regulator RcsB and for the isolated receiver domain of the RcsC kinase largely overlap in defined regions of the helices alphaII and alphaIII, but show significant differences. Using the residues with the largest chemical shift changes obtained from titration experiments, we observed a dissociation constant of approximately 200microM for YojN-HPt/RcsC-PR and of 40microM for YojN-HPt/RcsB complexes. Our data indicate the presence of a recognition area in close vicinity to the active-site histidine residue of HPt domains as a determinant of specificity in signal-transduction pathways.


    Organizational Affiliation

    Institute of Biophysical Chemistry, Centre for Biomolecular Magnetic Resonance, J.W. Goethe-University, Frankfurt-am-Main, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Putative sensor-like histidine kinase yojN
A
116Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rcsD (yojN, yojP, yojQ)
EC: 2.7.2.-
Find proteins for P39838 (Escherichia coli (strain K12))
Go to UniProtKB:  P39838
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 25 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 1SR2 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-10-26
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance