4LWS

EsxA : EsxB (SeMet) hetero-dimer from Thermomonospora curvata


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.190 

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:  
    4LWS, 4LYA, 4N1A, 4NH0

  • 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 structural approaches to guide studies of the putative translocase EccC, a unique enzyme with three ATPase domains, and its secretion substrate EsxB ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Uncharacterized proteinA [auth B]103Thermomonospora curvata DSM 43183Mutation(s): 0 
Gene Names: Tcur_0611esxA
UniProt
Find proteins for D1A4H1 (Thermomonospora curvata (strain ATCC 19995 / DSM 43183 / JCM 3096 / KCTC 9072 / NBRC 15933 / NCIMB 10081 / Henssen B9))
Explore D1A4H1 
Go to UniProtKB:  D1A4H1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupD1A4H1
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Uncharacterized proteinB [auth A]135Thermomonospora curvata DSM 43183Mutation(s): 0 
Gene Names: Tcur_0610esxB
UniProt
Find proteins for D1A4H0 (Thermomonospora curvata (strain ATCC 19995 / DSM 43183 / JCM 3096 / KCTC 9072 / NBRC 15933 / NCIMB 10081 / Henssen B9))
Explore D1A4H0 
Go to UniProtKB:  D1A4H0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupD1A4H0
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download Ideal Coordinates CCD File 
K [auth B],
L [auth B],
N [auth A],
O [auth A],
P [auth A],
K [auth B],
L [auth B],
N [auth A],
O [auth A],
P [auth A],
Q [auth A]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

Download Ideal Coordinates CCD File 
C [auth B],
D [auth B],
E [auth B],
F [auth B],
G [auth B],
C [auth B],
D [auth B],
E [auth B],
F [auth B],
G [auth B],
H [auth B],
I [auth B],
J [auth B],
M [auth A]
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A [auth B]L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.190 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.253α = 90
b = 69.805β = 90
c = 128.406γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
SHELXSphasing
PHENIXrefinement
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • 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