5TSG

PilB from Geobacter metallireducens bound to ADP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.40 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.273 
  • R-Value Observed: 0.274 

wwPDB Validation 3D Report Full Report



Literature

The molecular mechanism of the type IVa pilus motors.

McCallum, M.Tammam, S.Khan, A.Burrows, L.L.Howell, P.L.

(2017) Nat Commun 8: 15091-15091

  • DOI: 10.1038/ncomms15091
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Type IVa pili are protein filaments essential for virulence in many bacterial pathogens; they extend and retract from the surface of bacterial cells to pull the bacteria forward. The motor ATPase PilB powers pilus assembly. Here we report the structu ...

    Type IVa pili are protein filaments essential for virulence in many bacterial pathogens; they extend and retract from the surface of bacterial cells to pull the bacteria forward. The motor ATPase PilB powers pilus assembly. Here we report the structures of the core ATPase domains of Geobacter metallireducens PilB bound to ADP and the non-hydrolysable ATP analogue, AMP-PNP, at 3.4 and 2.3 Å resolution, respectively. These structures reveal important differences in nucleotide binding between chains. Analysis of these differences reveals the sequential turnover of nucleotide, and the corresponding domain movements. Our data suggest a clockwise rotation of the central sub-pores of PilB, which through interactions with PilC, would support the assembly of a right-handed helical pilus. Our analysis also suggests a counterclockwise rotation of the C2 symmetric PilT that would enable right-handed pilus disassembly. The proposed model provides insight into how this family of ATPases can power pilus extension and retraction.


    Organizational Affiliation

    Program in Molecular Medicine, Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, Ontario, Canada M5G 0A4.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Type IV pilus biogenesis ATPase PilB
B, C, D
588Geobacter metallireducens GS-15Mutation(s): 0 
Gene Names: pilBGmet_1393
Find proteins for Q39VU7 (Geobacter metallireducens (strain GS-15 / ATCC 53774 / DSM 7210))
Go to UniProtKB:  Q39VU7
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download CCD File 
B, C
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
B, C, D
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
FMT
Query on FMT

Download CCD File 
D
FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.40 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.273 
  • R-Value Observed: 0.274 
  • Space Group: P 32 2 1
  • Diffraction Data DOI: 10.15785/SBGRID/452 SBGrid
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.12α = 90
b = 112.12β = 90
c = 299.18γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-05-17
    Type: Initial release