4QL6

Structure of C. trachomatis CT441


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.97 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.256 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural basis of the proteolytic and chaperone activity of Chlamydia trachomatis CT441

Kohlmann, F.Shima, K.Hilgenfeld, R.Solbach, W.Rupp, J.Hansen, G.

(2015) J.Bacteriol. 197: 211-218

  • DOI: 10.1128/JB.02140-14

  • PubMed Abstract: 
  • Chlamydia trachomatis is the most prevalent cause of preventable blindness worldwide and a major reason for infectious infertility in females. Several bacterial factors have been implicated in the pathogenesis of C. trachomatis. Combining structural ...

    Chlamydia trachomatis is the most prevalent cause of preventable blindness worldwide and a major reason for infectious infertility in females. Several bacterial factors have been implicated in the pathogenesis of C. trachomatis. Combining structural and mutational analysis, we have shown that the proteolytic function of CT441 depends on a conserved Ser/Lys/Gln catalytic triad and a functional substrate-binding site within a flexible PDZ (postsynaptic density of 95 kDa, discs large, and zonula occludens) domain. Previously, it has been suggested that CT441 is involved in modulating estrogen signaling responses of the host cell. Our results show that although in vitro CT441 exhibits proteolytic activity against SRAP1, a coactivator of estrogen receptor α, CT441-mediated SRAP1 degradation is not observed during the intracellular developmental cycle before host cells are lysed and infectious chlamydiae are released. Most compellingly, we have newly identified a chaperone activity of CT441, indicating a role of CT441 in prokaryotic protein quality control processes.


    Organizational Affiliation

    Institute of Medical Microbiology and Hygiene, University of Lübeck, Lübeck, Germany German Center for Infection Research (DZIF), partner site Lübeck, Lübeck, Germany Medical Clinic III, University Clinic of Schleswig-Holstein, Campus Lübeck, Lübeck, Germany.,Institute of Biochemistry, Center for Structural and Cell Biology in Medicine, University of Lübeck, Lübeck, Germany.,Institute of Biochemistry, Center for Structural and Cell Biology in Medicine, University of Lübeck, Lübeck, Germany hansen@biochem.uni-luebeck.de.,Institute of Biochemistry, Center for Structural and Cell Biology in Medicine, University of Lübeck, Lübeck, Germany German Center for Infection Research (DZIF), partner site Lübeck, Lübeck, Germany Laboratory for Structural Biology of Infection and Inflammation, Hamburg, Germany.,Institute of Medical Microbiology and Hygiene, University of Lübeck, Lübeck, Germany German Center for Infection Research (DZIF), partner site Lübeck, Lübeck, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carboxy-terminal processing protease
A, B, C
634Chlamydia trachomatis serovar L2 (strain 434/Bu / ATCC VR-902B)Mutation(s): 1 
Gene Names: tsp
Find proteins for A0A0H3MDM0 (Chlamydia trachomatis serovar L2 (strain 434/Bu / ATCC VR-902B))
Go to UniProtKB:  A0A0H3MDM0
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.97 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.256 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 86.730α = 90.00
b = 183.990β = 90.00
c = 209.620γ = 90.00
Software Package:
Software NamePurpose
BUCCANEERmodel building
BUCCANEERphasing
MAR345data collection
PHENIXmodel building
XDSdata reduction
SCALAdata scaling
PHENIXphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-11-05
    Type: Initial release
  • Version 1.1: 2015-06-24
    Type: Database references
  • Version 1.2: 2015-10-28
    Type: Other
  • Version 1.3: 2017-11-22
    Type: Refinement description