4OGM

MBP-fusion protein of PilA1 residues 26-159


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.23 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.191 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Structural and Evolutionary Analyses Show Unique Stabilization Strategies in the Type IV Pili of Clostridium difficile.

Piepenbrink, K.H.Maldarelli, G.A.Martinez de la Pena, C.F.Dingle, T.C.Mulvey, G.L.Lee, A.von Rosenvinge, E.Armstrong, G.D.Donnenberg, M.S.Sundberg, E.J.

(2015) Structure 23: 385-396

  • DOI: 10.1016/j.str.2014.11.018
  • Primary Citation of Related Structures:  
    4TSM, 4OGM, 4PE2

  • PubMed Abstract: 
  • Type IV pili are produced by many pathogenic Gram-negative bacteria and are important for processes as diverse as twitching motility, biofilm formation, cellular adhesion, and horizontal gene transfer. However, many Gram-positive species, including Clostridium difficile, also produce type IV pili ...

    Type IV pili are produced by many pathogenic Gram-negative bacteria and are important for processes as diverse as twitching motility, biofilm formation, cellular adhesion, and horizontal gene transfer. However, many Gram-positive species, including Clostridium difficile, also produce type IV pili. Here, we identify the major subunit of the type IV pili of C. difficile, PilA1, and describe multiple 3D structures of PilA1, demonstrating the diversity found in three strains of C. difficile. We also model the incorporation of both PilA1 and a minor pilin, PilJ, into the pilus fiber. Although PilA1 contains no cysteine residues, and therefore cannot form the disulfide bonds found in all Gram-negative type IV pilins, it adopts unique strategies to achieve a typical pilin fold. The structures of PilA1 and PilJ exhibit similarities with the type IVb pilins from Gram-negative bacteria that suggest that the type IV pili of C. difficile are involved in microcolony formation.


    Organizational Affiliation

    Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD 21201, USA. Electronic address: esundberg@ihv.umaryland.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Maltose ABC transporter periplasmic protein, pilin protein chimeraA520Escherichia coliClostridioides difficile
This entity is chimeric
Mutation(s): 5 
Gene Names: malEHMPREF9530_03068pulGSAMEA3374973_02945
UniProt
Find proteins for P0AEX9 (Escherichia coli (strain K12))
Explore P0AEX9 
Go to UniProtKB:  P0AEX9
Protein Feature View
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranoseB2N/A Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G07411ON
GlyCosmos:  G07411ON
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2
IDChainsNameType/Class2D Diagram3D Interactions
PRD_900001
Query on PRD_900001
Balpha-maltoseOligosaccharide /  Nutrient Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.23 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.191 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.224α = 90
b = 74.71β = 90
c = 97.517γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata scaling
XSCALEdata scaling

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-01-14
    Type: Initial release
  • Version 1.1: 2015-02-04
    Changes: Database references
  • Version 1.2: 2015-02-18
    Changes: Database references
  • Version 1.3: 2017-06-28
    Changes: Database references, Source and taxonomy
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary