1S26

Structure of Anthrax Edema Factor-Calmodulin-alpha,beta-methyleneadenosine 5'-triphosphate Complex Reveals an Alternative Mode of ATP Binding to the Catalytic Site

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.264 
  • R-Value Observed: 0.264 

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This is version 1.3 of the entry. See complete history. 


Literature

Structure of anthrax edema factor-calmodulin-adenosine-5'-(alpha,beta-methylene)-triphosphate complex reveals an alternative mode of ATP binding to the catalytic site

Shen, Y., Guo, Q., Zhukovskaya, N.L., Drum, C.L., Bohm, A., Tang, W.-J.

(2004) Biochem Biophys Res Commun 317: 309-314

  • DOI: 10.1016/j.bbrc.2004.03.046
  • Primary Citation of Related Structures:  
    1S26

  • PubMed Abstract: 

    • Anthrax edema factor (EF) is a key virulence factor secreted by Bacillus anthracis. Here, we report a structure, at 3.0 A resolution, of the catalytic domain of EF (EF3) in complex with calmodulin (CaM) and adenosine 5'-(alpha,beta-methylene)-triphosphat ...

    Anthrax edema factor (EF) is a key virulence factor secreted by Bacillus anthracis. Here, we report a structure, at 3.0 A resolution, of the catalytic domain of EF (EF3) in complex with calmodulin (CaM) and adenosine 5'-(alpha,beta-methylene)-triphosphate (AMPCPP). Although the binding of the triphosphate of AMPCPP to EF3 can be superimposed on that of previously determined 3'deoxy-ATP (3'dATP) and 2'deoxy 3' anthraniloyl-ATP (2'd3' ANT-ATP) in EF3-CaM, the ribose and the adenine rings of AMPCPP are rotated approximately 105 and 180 degrees, respectively, relative to those of 3'dATP and 2'd3'ANT-ATP. Based on this model, K382 and F586 should play key roles in the recognition of adenine. However, mutations of these residues to alanine either separately or together cause only modest changes in Michaelis-Menten constants and IC50 values of AMPCPP and cAMP. Therefore, this alternate binding mode of the adenosine of AMPCPP binds to EF likely playing only a minor role in ATP binding and in catalysis.

    Related Citations: 
    • Structural Basis for the Activation of Anthrax Adenylyl Cyclase Exotoxin by Calmodulin
      Drum, C.L., Yan, S.-Z., Bard, J., Shen, Y.-Q., Lu, D., Soelaiman, S., Grabarek, Z., Bohm, A., Tang, W.-J.
      (2002) Nature 415: 396
    Organizational Affiliation: 

    Ben-May Institute for Cancer Research, The University of Chicago, 924 East 57th Street, Chicago, IL 60637, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Calmodulin-sensitive adenylate cyclase A, B, C510Bacillus anthracisMutation(s): 0 
Gene Names: cya, pXO1-122, BXA0141, GBAA_pXO1_0142
EC: 4.6.1.1
Find proteins for P40136 (Bacillus anthracis)
Explore P40136 
Go to UniProtKB:  P40136
Protein Feature View
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  • Reference Sequence
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(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Calmodulin D, E, F148Homo sapiensMutation(s): 0 
Gene Names: CALM1, CAM1, CALM, CAM, CALM2, CAM2, CAMB, CALM3, CAM3, CAMC
Find proteins for P0DP23 (Homo sapiens)
Explore P0DP23 
Go to UniProtKB:  P0DP23
NIH Common Fund Data Resources
PHAROS:  P0DP23
GTEx:  ENSG00000198668
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.264 
  • R-Value Observed: 0.264 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 117.555α = 90
b = 167.605β = 90
c = 345.346γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-04-13
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-11-20
    Changes: Advisory, Derived calculations