4MEB

Crystal structure of aCif-D158S


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.155 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Signature motifs identify an acinetobacter cif virulence factor with epoxide hydrolase activity.

Bahl, C.D.Hvorecny, K.L.Bridges, A.A.Ballok, A.E.Bomberger, J.M.Cady, K.C.O'Toole, G.A.Madden, D.R.

(2014) J.Biol.Chem. 289: 7460-7469

  • DOI: 10.1074/jbc.M113.518092
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Endocytic recycling of the cystic fibrosis transmembrane conductance regulator (CFTR) is blocked by the CFTR inhibitory factor (Cif). Originally discovered in Pseudomonas aeruginosa, Cif is a secreted epoxide hydrolase that is transcriptionally regul ...

    Endocytic recycling of the cystic fibrosis transmembrane conductance regulator (CFTR) is blocked by the CFTR inhibitory factor (Cif). Originally discovered in Pseudomonas aeruginosa, Cif is a secreted epoxide hydrolase that is transcriptionally regulated by CifR, an epoxide-sensitive repressor. In this report, we investigate a homologous protein found in strains of the emerging nosocomial pathogens Acinetobacter nosocomialis and Acinetobacter baumannii ("aCif"). Like Cif, aCif is an epoxide hydrolase that carries an N-terminal secretion signal and can be purified from culture supernatants. When applied directly to polarized airway epithelial cells, mature aCif triggers a reduction in CFTR abundance at the apical membrane. Biochemical and crystallographic studies reveal a dimeric assembly with a stereochemically conserved active site, confirming our motif-based identification of candidate Cif-like pathogenic EH sequences. Furthermore, cif expression is transcriptionally repressed by a CifR homolog ("aCifR") and is induced in the presence of epoxides. Overall, this Acinetobacter protein recapitulates the essential attributes of the Pseudomonas Cif system and thus may facilitate airway colonization in nosocomial lung infections.


    Organizational Affiliation

    From the Departments of Biochemistry and.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Predicted protein
A, B
331N/AMutation(s): 1 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A, B
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.155 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 86.109α = 90.00
b = 42.511β = 98.38
c = 86.907γ = 90.00
Software Package:
Software NamePurpose
PHENIXmodel building
PHENIXrefinement
XDSdata scaling
XDSdata reduction
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-02-05
    Type: Initial release
  • Version 1.1: 2014-02-12
    Type: Database references
  • Version 1.2: 2014-04-02
    Type: Database references
  • Version 1.3: 2017-11-15
    Type: Refinement description