5JVF

Crystal Structure of Apo-FleN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.66 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.190 

wwPDB Validation 3D Report Full Report



Literature

ATP-Induced Structural Remodeling in the Antiactivator FleN Enables Formation of the Functional Dimeric Form

ChanchalBanerjee, P.Jain, D.

(2017) Structure 25: 243-252

  • DOI: 10.1016/j.str.2016.11.022
  • Primary Citation of Related Structures:  
    5JVF, 5J1J

  • PubMed Abstract: 
  • FleN, a P loop ATPase is vital for maintaining a monotrichous phenotype in Pseudomonas aeruginosa. FleN exhibits antagonistic activity against FleQ, the master transcriptional regulator of flagellar genes. Crystal structures of FleN in the apo form ( ...

    FleN, a P loop ATPase is vital for maintaining a monotrichous phenotype in Pseudomonas aeruginosa. FleN exhibits antagonistic activity against FleQ, the master transcriptional regulator of flagellar genes. Crystal structures of FleN in the apo form (1.66 Å) and in complex with β,γ-imidoadenosine 5'-triphosphate (1.55 Å) reveal that it undergoes drastic conformational changes on ATP binding to attain a structure capable of dimerization. Mutations of the residues that stabilize the binding of ATP were defective in their ability to dimerize and do not inhibit ATP hydrolysis by FleQ. Conversely, the catalytic mutant of FleN, was an efficient inhibitor. These observations posit that the dimer is the functional form of FleN and it is nucleotide binding and not hydrolysis by FleN that is necessary to exert an antagonistic effect against FleQ. Our study shows that ATP-induced dimerization may be a strategy to achieve reversible inhibition of FleQ to fine-tune the function of this activator to an optimal level.


    Organizational Affiliation

    Transcription Regulation Lab, Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3(rd) Milestone, Faridabad-Gurgaon Expressway, Faridabad, Haryana 121001, India. Electronic address: deepti@rcb.res.in.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Site-determining proteinA285Pseudomonas aeruginosa PAO1Mutation(s): 0 
Gene Names: fleNPA1454
Find proteins for G3XD64 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore G3XD64 
Go to UniProtKB:  G3XD64
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IOD
Query on IOD

Download CCD File 
A
IODIDE ION
I
XMBWDFGMSWQBCA-UHFFFAOYSA-M
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.66 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.190 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.25α = 90
b = 66.25β = 90
c = 112.87γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
iMOSFLMdata reduction
SCALAdata scaling
AutoSolphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Department of BiotechnologyIndia--

Revision History 

  • Version 1.0: 2017-03-29
    Type: Initial release