1WXR

Crystal structure of Heme Binding protein, an autotransporter hemoglobine protease from pathogenic Escherichia coli


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structure of heme binding protein, an autotransporter hemoglobin protease from pathogenic escherichia coli

Otto, B.R.Sijbrandi, R.Luirink, J.Oudega, B.Heddle, J.G.Mizutani, K.Park, S.-Y.Tame, J.R.H.

(2005) J Biol Chem 280: 17339-17345

  • DOI: 10.1074/jbc.M412885200
  • Primary Citation of Related Structures:  
    1WXR

  • PubMed Abstract: 
  • The acquisition of iron is essential for the survival of pathogenic bacteria, which have consequently evolved a wide variety of uptake systems to extract iron and heme from host proteins such as hemoglobin. Hemoglobin protease (Hbp) was discovered as ...

    The acquisition of iron is essential for the survival of pathogenic bacteria, which have consequently evolved a wide variety of uptake systems to extract iron and heme from host proteins such as hemoglobin. Hemoglobin protease (Hbp) was discovered as a factor involved in the symbiosis of pathogenic Escherichia coli and Bacteroides fragilis, which cause intra-abdominal abscesses. Released from E. coli, this serine protease autotransporter degrades hemoglobin and delivers heme to both bacterial species. The crystal structure of the complete passenger domain of Hbp (110 kDa) is presented, which is the first structure from this class of serine proteases and the largest parallel beta-helical structure yet solved.


    Organizational Affiliation

    Department of Molecular Microbiology, Faculty of Earth and Life Sciences, Vrije Universiteit de Boelelaan 1085, 1081 HV Amsterdam, The Netherlands.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
haemoglobin proteaseA1048Escherichia coliMutation(s): 0 
Gene Names: hbp
EC: 3.4.21
Membrane protein
Mpstruc
Group: 
TRANSMEMBRANE PROTEINS: BETA-BARREL
Sub Group: 
Outer Membrane Autotransporters
Protein: 
Hbp (hemoglobin protease) full-length passenger domain
Find proteins for O88093 (Escherichia coli)
Explore O88093 
Go to UniProtKB:  O88093
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.205 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 115.028α = 90
b = 115.028β = 90
c = 437.057γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-03-01
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance