3FI7

Crystal Structure of the autolysin Auto (Lmo1076) from Listeria monocytogenes, catalytic domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.181 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural basis for autoinhibition and activation of Auto, a virulence-associated peptidoglycan hydrolase of Listeria monocytogenes.

Bublitz, M.Polle, L.Holland, C.Heinz, D.W.Nimtz, M.Schubert, W.D.

(2009) Mol Microbiol 71: 1509-1522

  • DOI: https://doi.org/10.1111/j.1365-2958.2009.06619.x
  • Primary Citation of Related Structures:  
    3FI7

  • PubMed Abstract: 

    During a bacterial infection, each successive step is orchestrated by a dedicated set of virulence factors. In Gram-positive bacteria, the presentation or release of such factors is crucially dependent on the continual remodelling of the cell wall. We have investigated the autolysin or peptidoglycan hydrolase Auto (Lmo1076) from the human pathogen Listeria monocytogenes to structurally and biochemically underpin its role in host cell invasion. We demonstrate that Auto is an N-acetylglucosaminidase, that it is autoinhibited when newly secreted but activated by proteolytic cleavage, that it has an acidic pH optimum and that it preferentially cleaves acetylated over de-acetylated peptidoglycan. The crystal structure of Auto, the first for glycoside hydrolase family 73, and the first for a listerial autolysin, indicates that autoinhibition is due to an N-terminal alpha-helix unique to Auto that physically blocks the substrate-binding cleft. We identify Glu122 and Glu156 as the two catalytically essential carboxylate groups. The physical properties of Auto as well as its localization to lipoteichoic acid by its four C-terminal GW modules imply cell wall degradation by Auto to be highly co-ordinated. Its spatio-temporally controlled activation and localized activity in an acidified environment indicate that it facilitates remodelling of the cell wall and may be involved in co-ordinating the release of virulence factors at specific stages of an infection.


  • Organizational Affiliation

    Molecular Host Pathogen Interactions, Division of Structural Biology, Helmholtz Centre for Infection Research, Inhoffenstr, Braunschweig, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Lmo1076 protein183Listeria monocytogenes EGD-eMutation(s): 0 
Gene Names: lmo1076
EC: 3.2.1.96
UniProt
Find proteins for Q8Y842 (Listeria monocytogenes serovar 1/2a (strain ATCC BAA-679 / EGD-e))
Explore Q8Y842 
Go to UniProtKB:  Q8Y842
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8Y842
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
B [auth A]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.181 
  • Space Group: P 62 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 133.5α = 90
b = 133.5β = 90
c = 88.9γ = 120
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-04-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.2: 2017-06-28
    Changes: Source and taxonomy
  • Version 1.3: 2024-03-20
    Changes: Data collection, Database references, Derived calculations