3L48

Crystal structure of the C-terminal domain of the PapC usher

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.201 

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This is version 1.1 of the entry. See complete history. 


Literature

Structural Homology between the C-Terminal Domain of the PapC Usher and Its Plug.

Ford, B., Rego, A.T., Ragan, T.J., Pinkner, J., Dodson, K., Driscoll, P.C., Hultgren, S., Waksman, G.

(2010) J Bacteriol 192: 1824-1831

  • DOI: 10.1128/JB.01677-09
  • Primary Citation of Related Structures:  
    2KT6, 3L48

  • PubMed Abstract: 

    • P pili are extracellular appendages responsible for the targeting of uropathogenic Escherichia coli to the kidney. They are assembled by the chaperone-usher (CU) pathway of pilus biogenesis involving two proteins, the periplasmic chaperone PapD and the outer membrane assembly platform, PapC ...

    P pili are extracellular appendages responsible for the targeting of uropathogenic Escherichia coli to the kidney. They are assembled by the chaperone-usher (CU) pathway of pilus biogenesis involving two proteins, the periplasmic chaperone PapD and the outer membrane assembly platform, PapC. Many aspects of the structural biology of the Pap CU pathway have been elucidated, except for the C-terminal domain of the PapC usher, the structure of which is unknown. In this report, we identify a stable and folded fragment of the C-terminal region of the PapC usher and determine its structure using both X-ray crystallography and nuclear magnetic resonance (NMR) spectroscopy. These structures reveal a beta-sandwich fold very similar to that of the plug domain, a domain of PapC obstructing its translocation domain. This structural similarity suggests similar functions in usher-mediated pilus biogenesis, playing out at different stages of the process. This structure paves the way for further functional analysis targeting surfaces common to both the plug and the C-terminal domain of PapC.

    Organizational Affiliation: 

    Department of Pathology and Immunology, Washington University School of Medicine, Saint Louis, Missouri 63110, USA.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Outer membrane usher protein PapCA, B, C, D, E94Escherichia coli UTI89Mutation(s): 0 
Gene Names: papC, UTI89_C4893
UniProt
Find proteins for Q1R2W8 (Escherichia coli (strain UTI89 / UPEC))
Explore Q1R2W8 
Go to UniProtKB:  Q1R2W8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ1R2W8
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CO
Query on CO
Download Ideal Coordinates CCD File 
F [auth A],
G [auth C]		COBALT (II) ION
Co
XLJKHNWPARRRJB-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.201 
  • Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 100.936α = 90
b = 100.936β = 90
c = 89.54γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-03-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance