6P8S

Structure of P. aeruginosa ATCC27853 HORMA1:HORMA2:Peptide 1 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.1 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.

(2019) Mol.Cell --: --

  • DOI: 10.1016/j.molcel.2019.12.009
  • Primary Citation of Related Structures:  

  • 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

    Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla, CA, USA; Department of Pharmacology, University of California, San Diego, La Jolla, CA, USA.,Division of Biological Sciences, University of California, San Diego, La Jolla, CA, USA.,Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, USA; Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla, CA, USA.,Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, USA.,Department of Pharmacology, University of California, San Diego, La Jolla, CA, USA.,Department of Pharmacology, University of California, San Diego, La Jolla, CA, USA; Department of Medicine, University of California, San Diego, La Jolla, CA, USA.,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
HORMA domain containing protein
A, B
166Pseudomonas aeruginosaMutation(s): 0 
Gene Names: ORF C60
Find proteins for Q8GQ50 (Pseudomonas aeruginosa)
Go to UniProtKB:  Q8GQ50
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HORMA1
C, D
133Pseudomonas aeruginosaMutation(s): 0 
Find proteins for A0A0F6RRN7 (Pseudomonas aeruginosa)
Go to UniProtKB:  A0A0F6RRN7
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Peptide 1
E, F
10N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACT
Query on ACT

Download SDF File 
Download CCD File 
A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
CL
Query on CL

Download SDF File 
Download CCD File 
A, B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
1PE
Query on 1PE

Download SDF File 
Download CCD File 
A
PENTAETHYLENE GLYCOL
PEG400
C10 H22 O6
JLFNLZLINWHATN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 100.892α = 90.00
b = 124.539β = 90.00
c = 109.141γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
XDSdata reduction
PHENIXrefinement
Aimlessdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



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
    Type: Database references