1Y6D

Solution structure and dynamics of LuxU from Vibrio harveyi, a phosphotransferase protein involved in bacterial quorum sensing


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 19 
  • Conformers Submitted: 19 
  • 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 and dynamics of LuxU from Vibrio harveyi, a phosphotransferase protein involved in bacterial quorum sensing.

Ulrich, D.L.Kojetin, D.Bassler, B.L.Cavanagh, J.Loria, J.P.

(2005) J.Mol.Biol. 347: 297-307

  • DOI: 10.1016/j.jmb.2005.01.039

  • PubMed Abstract: 
  • The marine bacterium Vibrio harveyi controls its bioluminescence by a process known as quorum sensing. In this process, autoinducer molecules are detected by membrane-bound sensor kinase/response regulator proteins (LuxN and LuxQ) that relay a signal ...

    The marine bacterium Vibrio harveyi controls its bioluminescence by a process known as quorum sensing. In this process, autoinducer molecules are detected by membrane-bound sensor kinase/response regulator proteins (LuxN and LuxQ) that relay a signal via a series of protein phosphorylation reactions to another response regulator protein, LuxO. Phosphorylated LuxO indirectly represses the expression of the proteins responsible for bioluminescence. Integral to this quorum sensing process is the function of the phosphotransferase protein, LuxU. LuxU acts to shuttle the phosphate from the membrane-bound proteins, LuxN and LuxQ, to LuxO. LuxU is a 114 amino acid residue monomeric protein. Solution NMR was used to determine the three-dimensional structure of LuxU. LuxU contains a four-helix bundle topology with the active-site histidine residue (His58) located on alpha-helix C and exposed to solution. The active site represents a cluster of positively charged residues located on an otherwise hydrophobic protein face. NMR spin-relaxation experiments identify a collection of flexible residues localized on the same region of LuxU as His58. The studies described here represent the first structural characterization of an isolated, monomeric bacterial phosphotransferase protein.


    Related Citations: 
    • 1H,15N,and 13C chemical shift assignments of the Vibrio harveyi histidine phosphotransferase protein LuxU
      Ulrich, D.L.,Thompson, R.,Bassler, B.,Cavanagh, J.,Loria, J.P.
      (2004) J.BIOMOL.NMR 29: 551


    Organizational Affiliation

    Department of Chemistry, Yale University, P.O. Box 208107, New Haven, CT 06520, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Phosphorelay protein luxU
A
120Vibrio harveyiMutation(s): 0 
Gene Names: luxU
Find proteins for P0C5S4 (Vibrio harveyi)
Go to UniProtKB:  P0C5S4
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 19 
  • Conformers Submitted: 19 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 1Y6D Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-12-14
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance