6P8P

Structure of P. aeruginosa ATCC27853 HORMA1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.64 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.175 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

HORMA Domain Proteins and a Trip13-like ATPase Regulate Bacterial cGAS-like Enzymes to Mediate Bacteriophage Immunity.

Ye, Q.Lau, R.K.Mathews, I.T.Birkholz, E.A.Watrous, J.D.Azimi, C.S.Pogliano, J.Jain, M.Corbett, K.D.

(2020) Mol Cell 77: 709

  • DOI: 10.1016/j.molcel.2019.12.009
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Bacteria are continually challenged by foreign invaders, including bacteriophages, and have evolved a variety of defenses against these invaders. Here, we describe the structural and biochemical mechanisms of a bacteriophage immunity pathway found in ...

    Bacteria are continually challenged by foreign invaders, including bacteriophages, and have evolved a variety of defenses against these invaders. Here, we describe the structural and biochemical mechanisms of a bacteriophage immunity pathway found in a broad array of bacteria, including E. coli and Pseudomonas aeruginosa. This pathway uses eukaryotic-like HORMA domain proteins that recognize specific peptides, then bind and activate a cGAS/DncV-like nucleotidyltransferase (CD-NTase) to generate a cyclic triadenylate (cAAA) second messenger; cAAA in turn activates an endonuclease effector, NucC. Signaling is attenuated by a homolog of the AAA+ ATPase Pch2/TRIP13, which binds and disassembles the active HORMA-CD-NTase complex. When expressed in non-pathogenic E. coli, this pathway confers immunity against bacteriophage λ through an abortive infection mechanism. Our findings reveal the molecular mechanisms of a bacterial defense pathway integrating a cGAS-like nucleotidyltransferase with HORMA domain proteins for threat sensing through protein detection and negative regulation by a Trip13 ATPase.


    Organizational Affiliation

    Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, USA; Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, USA; Ludwig Institute for Cancer Research, San Diego Branch, La Jolla, CA, USA. Electronic address: kcorbett@ucsd.edu.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Uncharacterized protein
A, B, C, D
156Pseudomonas aeruginosaMutation(s): 2 
Gene Names: DY979_07575EGY23_20885IPC669_24870PA5486_02900PAERUG_E15_London_28_01_14_04349IPC1481_29235
Find proteins for A0A0F6RRN7 (Pseudomonas aeruginosa)
Go to UniProtKB:  A0A0F6RRN7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download CCD File 
A, B, D
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 97.525α = 90
b = 97.525β = 90
c = 60.134γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2019-06-07 
  • Released Date: 2019-12-25 
  • Deposition Author(s): Ye, Q., Corbett, K.D.

Revision History 

  • Version 1.0: 2019-12-25
    Type: Initial release
  • Version 1.1: 2020-01-22
    Changes: Database references
  • Version 1.2: 2020-03-04
    Changes: Database references