1TZN

Crystal Structure of the Anthrax Toxin Protective Antigen Heptameric Prepore bound to the VWA domain of CMG2, an anthrax toxin receptor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.30 Å
  • R-Value Free: 0.330 
  • R-Value Work: 0.322 
  • R-Value Observed: 0.325 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of heptameric protective antigen bound to an anthrax toxin receptor: A role for receptor in pH-dependent pore formation

Lacy, D.B.Wigelsworth, D.J.Melnyk, R.A.Harrison, S.C.Collier, R.J.

(2004) Proc Natl Acad Sci U S A 101: 13147-13151

  • DOI: 10.1073/pnas.0405405101
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • After binding to cellular receptors and proteolytic activation, the protective antigen component of anthrax toxin forms a heptameric prepore. The prepore later undergoes pH-dependent conversion to a pore, mediating translocation of the edema and leth ...

    After binding to cellular receptors and proteolytic activation, the protective antigen component of anthrax toxin forms a heptameric prepore. The prepore later undergoes pH-dependent conversion to a pore, mediating translocation of the edema and lethal factors to the cytosol. We describe structures of the prepore (3.6 A) and a prepore:receptor complex (4.3 A) that reveal the location of pore-forming loops and an unexpected interaction of the receptor with the pore-forming domain. Lower pH is required for prepore-to-pore conversion in the presence of the receptor, indicating that this interaction regulates pH-dependent pore formation. We present an example of a receptor negatively regulating pH-dependent membrane insertion.


    Organizational Affiliation

    Department of Microbiology and Molecular Genetics, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protective antigen
A, B, C, D, E, F, G, H, I, J, K, L, M, O
562Bacillus anthracis str. A2012Mutation(s): 0 
Gene Names: pagA
Find proteins for P13423 (Bacillus anthracis)
Go to UniProtKB:  P13423

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Anthrax toxin receptor 2
a, b, c, d, e, f, g, h, i, j, k, l, m, o
181Homo sapiensMutation(s): 0 
Gene Names: ANTXR2CMG2
Find proteins for P58335 (Homo sapiens)
Go to UniProtKB:  P58335
NIH Common Fund Data Resources
PHAROS  P58335
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download CCD File 
A, B, C, D, E, F, G, H, I, J, K, L, M, O
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A, B, C, D, E, F, G, H, I, J, K, L, M, O
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.30 Å
  • R-Value Free: 0.330 
  • R-Value Work: 0.322 
  • R-Value Observed: 0.325 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 158.8α = 69.58
b = 158.846β = 69.07
c = 214.084γ = 65.58
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
MOLREPphasing
CNSrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-08-17
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Source and taxonomy, Version format compliance