3HV8

Crystal structure of FimX EAL domain from Pseudomonas aeruginosa bound to c-di-GMP

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.193 

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Literature

Structural analysis of the GGDEF-EAL domain-containing c-di-GMP receptor FimX.

Navarro, M.V., De, N., Bae, N., Wang, Q., Sondermann, H.

(2009) Structure 17: 1104-1116

  • DOI: 10.1016/j.str.2009.06.010
  • Primary Citation of Related Structures:  
    3HV8, 3HV9, 3HVA, 4J40

  • PubMed Abstract: 

    • Bacterial pathogenesis involves social behavior including biofilm formation and swarming, processes that are regulated by the bacterially unique second messenger cyclic di-GMP (c-di-GMP). Diguanylate cyclases containing GGDEF and phosphodiesterases containing EAL domains have been identified as the enzymes controlling cellular c-di-GMP levels, yet less is known regarding signal transmission and the targets of c-di-GMP ...

    Bacterial pathogenesis involves social behavior including biofilm formation and swarming, processes that are regulated by the bacterially unique second messenger cyclic di-GMP (c-di-GMP). Diguanylate cyclases containing GGDEF and phosphodiesterases containing EAL domains have been identified as the enzymes controlling cellular c-di-GMP levels, yet less is known regarding signal transmission and the targets of c-di-GMP. FimX, a protein from Pseudomonas aeruginosa that governs twitching motility, belongs to a large subfamily containing both GGDEF and EAL domains. Biochemical and structural analyses reveals its function as a high-affinity receptor for c-di-GMP. A model for full-length FimX was generated combining solution scattering data and crystal structures of the degenerate GGDEF and EAL domains. Although FimX forms a dimer in solution via the N-terminal domains, a crystallographic EAL domain dimer suggests modes for the regulation of FimX by c-di-GMP binding. The results provide the structural basis for c-di-GMP sensing via degenerate phosphodiesterases.

    Organizational Affiliation: 

    Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein FimXA268Pseudomonas aeruginosa PAO1Mutation(s): 0 
Gene Names: fimX, PA4959
EC: 3.1.4.52
UniProt
Find proteins for Q9HUK6 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9HUK6 
Go to UniProtKB:  Q9HUK6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9HUK6
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
C2E
Query on C2E
Download Ideal Coordinates CCD File 
B [auth A]9,9'-[(2R,3R,3aS,5S,7aR,9R,10R,10aS,12S,14aR)-3,5,10,12-tetrahydroxy-5,12-dioxidooctahydro-2H,7H-difuro[3,2-d:3',2'-j][1,3,7,9,2,8]tetraoxadiphosphacyclododecine-2,9-diyl]bis(2-amino-1,9-dihydro-6H-purin-6-one)
C20 H24 N10 O14 P2
PKFDLKSEZWEFGL-MHARETSRSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
C2E PDBBind:  3HV8 Kd: 104.2 (nM) from 1 assay(s)
Binding MOAD:  3HV8 Kd: 104.2 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.193 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 93.95α = 90
b = 93.95β = 90
c = 68.45γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
PHENIXrefinement
XDSdata reduction
XDSdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-08-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2012-03-21
    Changes: Database references