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
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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
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP13423
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Anthrax toxin receptor 2181Homo sapiensMutation(s): 0 
Gene Names: ANTXR2, CMG2
UniProt & NIH Common Fund Data Resources
Find proteins for P58335 (Homo sapiens)
Explore P58335 
Go to UniProtKB:  P58335
PHAROS:  P58335
GTEx:  ENSG00000163297 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP58335
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],
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],
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

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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