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
  • Primary Citation of Related Structures:  
    1TZN, 1TZO

  • 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 lethal factors to the cytosol ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protective antigen562Bacillus anthracis str. A2012Mutation(s): 0 
Gene Names: pagA
UniProt
Find proteins for P13423 (Bacillus anthracis)
Explore P13423 
Go to UniProtKB:  P13423
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Anthrax toxin receptor 2181Homo sapiensMutation(s): 0 
Gene Names: ANTXR2CMG2
UniProt & NIH Common Fund Data Resources
Find proteins for P58335 (Homo sapiens)
Explore P58335 
Go to UniProtKB:  P58335
PHAROS:  P58335
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download Ideal Coordinates CCD File 
AB [auth I] , BB [auth I] , CA [auth A] , DA [auth A] , DB [auth J] , EB [auth J] , FA [auth B] , GA [auth B] , 
AB [auth I], BB [auth I], CA [auth A], DA [auth A], DB [auth J], EB [auth J], FA [auth B], GA [auth B], GB [auth K], HB [auth K], IA [auth C], JA [auth C], JB [auth L], KB [auth L], LA [auth D], MA [auth D], MB [auth M], NB [auth M], OA [auth E], PA [auth E], PB [auth O], QB [auth O], RA [auth F], SA [auth F], UA [auth G], VA [auth G], XA [auth H], YA [auth H]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
CB [auth I] , EA [auth A] , FB [auth J] , HA [auth B] , IB [auth K] , KA [auth C] , LB [auth L] , NA [auth D] , 
CB [auth I], EA [auth A], FB [auth J], HA [auth B], IB [auth K], KA [auth C], LB [auth L], NA [auth D], OB [auth M], QA [auth E], RB [auth O], TA [auth F], WA [auth G], ZA [auth H]
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  (Full details and data files)

  • 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