3TPA

Structure of HbpA2 from Haemophilus parasuis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.164 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Delineation of the Pasteurellaceae-specific GbpA-family of glutathione-binding proteins.

Vergauwen, B.Van der Meeren, R.Dansercoer, A.Savvides, S.N.

(2011) BMC Biochem 12: 59-59

  • DOI: 10.1186/1471-2091-12-59
  • Primary Citation of Related Structures:  
    3TPA

  • PubMed Abstract: 
  • The Gram-negative bacterium Haemophilus influenzae is a glutathione auxotroph and acquires the redox-active tripeptide by import. The dedicated glutathione transporter belongs to the ATP-binding cassette (ABC)-transporter superfamily and displays more than 60% overall sequence identity with the well-studied dipeptide (Dpp) permease of Escherichia coli ...

    The Gram-negative bacterium Haemophilus influenzae is a glutathione auxotroph and acquires the redox-active tripeptide by import. The dedicated glutathione transporter belongs to the ATP-binding cassette (ABC)-transporter superfamily and displays more than 60% overall sequence identity with the well-studied dipeptide (Dpp) permease of Escherichia coli. The solute binding protein (SBP) that mediates glutathione transport in H. influenzae is a lipoprotein termed GbpA and is 54% identical to E. coli DppA, a well-studied member of family 5 SBP's. The discovery linking GbpA to glutathione import came rather unexpectedly as this import-priming SBP was previously annotated as a heme-binding protein (HbpA), and was thought to mediate heme acquisition. Nonetheless, although many SBP's have been implicated in more than one function, a prominent physiological role for GbpA and its partner permease in heme acquisition appears to be very unlikely. Here, we sought to characterize five representative GbpA homologs in an effort to delineate the novel GbpA-family of glutathione-specific family 5 SBPs and to further clarify their functional role in terms of ligand preferences.


    Organizational Affiliation

    Unit for Structural Biology, Laboratory for Protein Biochemistry and Biomolecular Engineering, Department of Biochemistry and Microbiology, Ghent University, 9000 Ghent, Belgium. Bjorn.Vergauwen@ugent.be



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heme-binding protein AA521Glaesserella parasuis 29755Mutation(s): 1 
Gene Names: HPS_10190
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.164 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.48α = 90
b = 61.02β = 90
c = 150.89γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
BUSTER-TNTrefinement
PDB_EXTRACTdata extraction
PHASERphasing
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-11-30
    Type: Initial release
  • Version 1.1: 2019-07-17
    Changes: Data collection, Refinement description