2XL4

LntA, a virulence factor from Listeria monocytogenes

• PDB DOI: https://doi.org/10.2210/pdb2XL4/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Listeria monocytogenes EGD-e
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2010-07-19 Released: 2011-02-02 
• Deposition Author(s): Lebreton, A., Job, V., Tham, T.N., Camejo, A., Mattei, P.J., Regnault, B., Cabanes, D., Dessen, A., Cossart, P., Bierne, H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.255 
• R-Value Work: 0.232 
• R-Value Observed: 0.233 

Literature

A bacterial protein targets the BAHD1 chromatin complex to stimulate type III interferon response.

Lebreton, A., Lakisic, G., Job, V., Fritsch, L., Tham, T.N., Camejo, A., Mattei, P.J., Regnault, B., Nahori, M.A., Cabanes, D., Gautreau, A., Ait-Si-Ali, S., Dessen, A., Cossart, P., Bierne, H.

(2011) Science 331: 1319-1321

• PubMed: 21252314 
• DOI: https://doi.org/10.1126/science.1200120
• Primary Citation of Related Structures:  
  2XL4


• PubMed Abstract: 
  

  Intracellular pathogens such as Listeria monocytogenes subvert cellular functions through the interaction of bacterial effectors with host components. Here we found that a secreted listerial virulence factor, LntA, could target the chromatin repressor BAHD1 in the host cell nucleus to activate interferon (IFN)-stimulated genes (ISGs). IFN-λ expression was induced in response to infection of epithelial cells with bacteria lacking LntA; however, the BAHD1-chromatin associated complex repressed downstream ISGs. In contrast, in cells infected with lntA-expressing bacteria, LntA prevented BAHD1 recruitment to ISGs and stimulated their expression. Murine listeriosis decreased in BAHD1(+/-) mice or when lntA was constitutively expressed. Thus, the LntA-BAHD1 interplay may modulate IFN-λ-mediated immune response to control bacterial colonization of the host.

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Organizational Affiliation: 

Institut Pasteur, Unité des Interactions Bactéries Cellules, Paris, France.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 20.34 kDa 
• Atom Count: 1,263 
• Modelled Residue Count: 147 
• Deposited Residue Count: 175 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Listeria nuclear targeted protein A	A	175	Listeria monocytogenes EGD-e	Mutation(s): 1  Gene Names: lntA, lmo0438
UniProt
Find proteins for Q8Y9T5 (Listeria monocytogenes serovar 1/2a (strain ATCC BAA-679 / EGD-e)) Explore Q8Y9T5  Go to UniProtKB:  Q8Y9T5

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	B [auth A], C [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.255 
• R-Value Work: 0.232 
• R-Value Observed: 0.233 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.672	α = 90
b = 49.672	β = 90
c = 141.799	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
SHARP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-02-02 
Deposition Author(s): Lebreton, A., Job, V., Tham, T.N., Camejo, A., Mattei, P.J., Regnault, B., Cabanes, D., Dessen, A., Cossart, P., Bierne, H.

Revision History  

• Version 1.0: 2011-02-02
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2018-10-03
  Changes: Data collection, Database references, Derived calculations, Source and taxonomy, Structure summary