4RNI

PaMorA dimeric phosphodiesterase. apo form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.17 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.185 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Formation and dimerization of the phosphodiesterase active site of the Pseudomonas aeruginosa MorA, a bi-functional c-di-GMP regulator.

Phippen, C.W.Mikolajek, H.Schlaefli, H.G.Keevil, C.W.Webb, J.S.Tews, I.

(2014) FEBS Lett 588: 4631-4636

  • DOI: 10.1016/j.febslet.2014.11.002
  • Primary Citation of Related Structures:  
    4RNH, 4RNI, 4RNJ, 4RNF

  • PubMed Abstract: 
  • Diguanylate cyclases (DGC) and phosphodiesterases (PDE), respectively synthesise and hydrolyse the secondary messenger cyclic dimeric GMP (c-di-GMP), and both activities are often found in a single protein. Intracellular c-di-GMP levels in turn regulate bacterial motility, virulence and biofilm formation ...

    Diguanylate cyclases (DGC) and phosphodiesterases (PDE), respectively synthesise and hydrolyse the secondary messenger cyclic dimeric GMP (c-di-GMP), and both activities are often found in a single protein. Intracellular c-di-GMP levels in turn regulate bacterial motility, virulence and biofilm formation. We report the first structure of a tandem DGC-PDE fragment, in which the catalytic domains are shown to be active. Two phosphodiesterase states are distinguished by active site formation. The structures, in the presence or absence of c-di-GMP, suggest that dimerisation and binding pocket formation are linked, with dimerisation being required for catalytic activity. An understanding of PDE activation is important, as biofilm dispersal via c-di-GMP hydrolysis has therapeutic effects on chronic infections.


    Organizational Affiliation

    Centre for Biological Sciences and Institute for Life Sciences, Life Sciences Building B85, The University of Southampton, University Rd, Southampton, Hampshire, SO17 1BJ, United Kingdom. Electronic address: Ivo.Tews@soton.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Motility regulatorA, B286Pseudomonas aeruginosa PAO1Mutation(s): 0 
Gene Names: morAPA4601
EC: 3.1.4.52
UniProt
Find proteins for Q9HVI8 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9HVI8 
Go to UniProtKB:  Q9HVI8
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.17 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.185 
  • Space Group: P 2 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 35.754α = 90
b = 94.466β = 90
c = 154.703γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata scaling
xia2data reduction

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-11-19
    Type: Initial release
  • Version 1.1: 2015-04-22
    Changes: Database references