4LYA

EssC (ATPases 2 and 3) from Geobacillus thermodenitrificans (SeMet)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.208 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Substrates Control Multimerization and Activation of the Multi-Domain ATPase Motor of Type VII Secretion.

Rosenberg, O.S.Dovala, D.Li, X.Connolly, L.Bendebury, A.Finer-Moore, J.Holton, J.Cheng, Y.Stroud, R.M.Cox, J.S.

(2015) Cell 161: 501-512

  • DOI: 10.1016/j.cell.2015.03.040
  • Primary Citation of Related Structures:  
    4NH0, 4N1A, 4LWS, 4LYA

  • PubMed Abstract: 
  • Mycobacterium tuberculosis and Staphylococcus aureus secrete virulence factors via type VII protein secretion (T7S), a system that intriguingly requires all of its secretion substrates for activity. To gain insights into T7S function, we used structu ...

    Mycobacterium tuberculosis and Staphylococcus aureus secrete virulence factors via type VII protein secretion (T7S), a system that intriguingly requires all of its secretion substrates for activity. To gain insights into T7S function, we used structural approaches to guide studies of the putative translocase EccC, a unique enzyme with three ATPase domains, and its secretion substrate EsxB. The crystal structure of EccC revealed that the ATPase domains are joined by linker/pocket interactions that modulate its enzymatic activity. EsxB binds via its signal sequence to an empty pocket on the C-terminal ATPase domain, which is accompanied by an increase in ATPase activity. Surprisingly, substrate binding does not activate EccC allosterically but, rather, by stimulating its multimerization. Thus, the EsxB substrate is also an integral T7S component, illuminating a mechanism that helps to explain interdependence of substrates, and suggests a model in which binding of substrates modulates their coordinate release from the bacterium.


    Organizational Affiliation

    Department of Microbiology and Immunology, Program in Microbial Pathogenesis and Host Defense, University of California, San Francisco, San Francisco, CA 94158, USA. Electronic address: jeffery.cox@ucsf.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Uncharacterized proteinA559Geobacillus thermodenitrificans NG80-2Mutation(s): 0 
Gene Names: GTNG_0419eccCessC
Find proteins for A4IKE7 (Geobacillus thermodenitrificans (strain NG80-2))
Explore A4IKE7 
Go to UniProtKB:  A4IKE7
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

Download CCD File 
A
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
AL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.208 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.346α = 90
b = 62.971β = 107.47
c = 83.888γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SHARPphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-02-04
    Type: Initial release
  • Version 1.1: 2015-02-11
    Changes: Structure summary
  • Version 1.2: 2016-09-21
    Changes: Database references