4N1A

Thermomonospora curvata EccC (ATPases 2 and 3) in complex with a signal sequence peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.24 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.226 

wwPDB Validation 3D Report Full Report


This is version 1.1 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:  

  • 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

    Division of Infectious Diseases, Department of Medicine, UCSF Medical Center, University of California, San Francisco, San Francisco, CA 94143-0654, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cell divisionFtsK/SpoIIIE
A, B, C, E
589Thermomonospora curvata (strain ATCC 19995 / DSM 43183 / JCM 3096 / NBRC 15933 / NCIMB 10081 / Henssen B9)Mutation(s): 0 
Gene Names: eccC
Find proteins for D1A4G7 (Thermomonospora curvata (strain ATCC 19995 / DSM 43183 / JCM 3096 / NBRC 15933 / NCIMB 10081 / Henssen B9))
Go to UniProtKB:  D1A4G7
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Uncharacterized protein
G, H, J, K
23Thermomonospora curvata (strain ATCC 19995 / DSM 43183 / JCM 3096 / NBRC 15933 / NCIMB 10081 / Henssen B9)Mutation(s): 0 
Gene Names: esxB
Find proteins for D1A4H0 (Thermomonospora curvata (strain ATCC 19995 / DSM 43183 / JCM 3096 / NBRC 15933 / NCIMB 10081 / Henssen B9))
Go to UniProtKB:  D1A4H0
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

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

Download SDF File 
Download CCD File 
A, B, C, E
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.24 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.226 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 216.150α = 90.00
b = 216.150β = 90.00
c = 186.510γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHASERphasing
HKL-2000data scaling
HKL-2000data reduction
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-02-11
    Type: Initial release
  • Version 1.1: 2016-09-21
    Type: Database references