2MUI

Solution structure of the AlgH protein from Pseudomonas aeruginosa, PA0405, UPF0301


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 500 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Solution structure and properties of AlgH from Pseudomonas aeruginosa.

Urbauer, J.L.Cowley, A.B.Broussard, H.P.Niedermaier, H.T.Bieber Urbauer, R.J.

(2015) Proteins 83: 1137-1150

  • DOI: 10.1002/prot.24811

  • PubMed Abstract: 
  • In Pseudomonas aeruginosa, the algH gene regulates the cellular concentrations of a number of enzymes and the production of several virulence factors, and is suggested to serve a global regulatory function. The precise mechanism by which the algH gen ...

    In Pseudomonas aeruginosa, the algH gene regulates the cellular concentrations of a number of enzymes and the production of several virulence factors, and is suggested to serve a global regulatory function. The precise mechanism by which the algH gene product, the AlgH protein, functions is unknown. The same is true for AlgH family members from other bacteria. In order to lay the groundwork for understanding the physical underpinnings of AlgH function, we examined the structure and physical properties of AlgH in solution. Under reducing conditions, results of NMR, electrophoretic mobility, and sedimentation equilibrium experiments indicate AlgH is predominantly monomeric and monodisperse in solution. Under nonreducing conditions intra and intermolecular disulfide bonds form, the latter promoting AlgH oligomerization. The high-resolution solution structure of AlgH reveals alpha/beta-sandwich architecture fashioned from ten beta strands and seven alpha helices. Comparison with available structures of orthologues indicates conservation of overall structural topology. The region of the protein most strongly conserved structurally also shows the highest amino acid sequence conservation and, as revealed by hydrogen-deuterium exchange studies, is also the most stable. In this region, evolutionary trace analysis identifies two clusters of amino acid residues with the highest evolutionary importance relative to all other AlgH residues. These frame a partially solvent exposed shallow hydrophobic cleft, perhaps identifying a site for intermolecular interactions. The results establish a physical foundation for understanding the structure and function of AlgH and AlgH family proteins and should be of general importance for further investigations of these and related proteins.


    Related Citations: 
    • 1H, 13C and 15N NMR assignments for AlgH, a putative transcriptional regulator from Pseudomonas aeruginosa.
      Cowley, A.B.,Urbauer, R.J.,Urbauer, J.L.
      (2005) J.Biomol.Nmr 33: 74
    • Cloning, high yield overexpression, purification, and characterization of AlgH, a regulator of alginate biosynthesis in Pseudomonas aeruginosa.
      Bieber Urbauer, R.J.,Gilmore, J.M.,Rosasco, S.E.,Hattle, J.M.,Cowley, A.B.,Urbauer, J.L.
      (2005) Protein Expr.Purif. 43: 57


    Organizational Affiliation

    The Department of Chemistry, the University of Georgia, Athens, Georgia, 30602-2556.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
UPF0301 protein AlgH
A
189Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228)Gene Names: algH
Find proteins for Q9RQ16 (Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228))
Go to UniProtKB:  Q9RQ16
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 500 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-04-22
    Type: Initial release
  • Version 1.1: 2015-06-10
    Type: Database references