4AFY

Crystal structure of the FimX EAL domain in complex with reaction product pGpG


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 

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This is version 1.2 of the entry. See complete history


Literature

Crystal Structure of an Eal Domain in Complex with Reaction Product 5'-Pgpg

Robert-Paganin, J.Nonin-Lecomte, S.Rety, S.

(2012) PLoS One 7: 52424

  • DOI: 10.1371/journal.pone.0052424
  • Primary Citation of Related Structures:  
    4AFY, 4AG0

  • PubMed Abstract: 
  • FimX is a large multidomain protein containing an EAL domain and involved in twitching motility in Pseudomonas aeruginosa. We present here two crystallographic structures of the EAL domain of FimX (residues 438-686): one of the apo form and the other of a complex with 5'-pGpG, the reaction product of the hydrolysis of c-di-GMP ...

    FimX is a large multidomain protein containing an EAL domain and involved in twitching motility in Pseudomonas aeruginosa. We present here two crystallographic structures of the EAL domain of FimX (residues 438-686): one of the apo form and the other of a complex with 5'-pGpG, the reaction product of the hydrolysis of c-di-GMP. In both crystal forms, the EAL domains form a dimer delimiting a large cavity encompassing the catalytic pockets. The ligand is trapped in this cavity by its sugar phosphate moiety. We confirmed by NMR that the guanine bases are not involved in the interaction in solution. We solved here the first structure of an EAL domain bound to the reaction product 5'-pGpG. Though isolated FimX EAL domain has a very low catalytic activity, which would not be significant compared to other catalytic EAL domains, the structure with the product of the reaction can provides some hints in the mechanism of hydrolysis of the c-di-GMP by EAL domains.


    Organizational Affiliation

    Laboratoire de Cristallographie et RMN biologiques, UMR 8015-Cente National de la Recherche Scientifique, Paris, France.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
FIMXA, B274Pseudomonas aeruginosa PAO1Mutation(s): 0 
Gene Names: PA4959fimX
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
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganismImage
5'-R(*GP*GP)-3'C, D2synthetic construct
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 104.33α = 90
b = 104.33β = 90
c = 154.24γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
BALBESphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-01-09
    Type: Initial release
  • Version 1.1: 2013-01-30
    Changes: Database references
  • Version 1.2: 2015-10-21
    Changes: Source and taxonomy