2A02

Solution NMR Structure of the Periplasmic Signaling Domain of the Outer Membrane Iron Transporter PupA from Pseudomonas putida.


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 1000 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Signal transduction pathway of TonB-dependent transporters.

Ferguson, A.D.Amezcua, C.A.Halabi, N.M.Chelliah, Y.Rosen, M.K.Ranganathan, R.Deisenhofer, J.

(2006) Proc Natl Acad Sci U S A 2: 513-518

  • DOI: https://doi.org/10.1073/pnas.0609887104
  • Primary Citation of Related Structures:  
    1ZZV, 2A02

  • PubMed Abstract: 

    Transcription of the ferric citrate import system is regulated by ferric citrate binding to the outer membrane transporter FecA. A signal indicating transporter occupancy is relayed across the outer membrane to energy-transducing and regulatory proteins embedded in the cytoplasmic membrane. Because transcriptional activation is not coupled to ferric citrate import, an allosteric mechanism underlies this complex signaling mechanism. Using evolution-based statistical analysis we have identified a sparse but structurally connected network of residues that links distant functional sites in FecA. Functional analyses of these positions confirm their involvement in the mechanism that regulates transcriptional activation in response to ferric citrate binding at the cell surface. This mechanism appears to be conserved and provides the structural basis for the allosteric signaling of TonB-dependent transporters.


  • Organizational Affiliation

    Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ferric-pseudobactin 358 receptor82Pseudomonas putidaMutation(s): 0 
Gene Names: pupA
UniProt
Find proteins for P25184 (Pseudomonas putida)
Explore P25184 
Go to UniProtKB:  P25184
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP25184
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 1000 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-09-26
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-03-09
    Changes: Database references, Derived calculations
  • Version 1.4: 2024-05-22
    Changes: Data collection