7QEC

Crystal structure of SlpA - domain II, domain that is involved in the self-assembly of the S-layer from Lactobacillus amylovorus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.190 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The molecular architecture of Lactobacillus S-layer: Assembly and attachment to teichoic acids.

Sagmeister, T.Gubensak, N.Buhlheller, C.Grininger, C.Eder, M.Ðordic, A.Millan, C.Medina, A.Murcia, P.A.S.Berni, F.Hynonen, U.Vejzovic, D.Damisch, E.Kulminskaya, N.Petrowitsch, L.Oberer, M.Palva, A.Malanovic, N.Codee, J.Keller, W.Uson, I.Pavkov-Keller, T.

(2024) Proc Natl Acad Sci U S A 121: e2401686121-e2401686121

  • DOI: https://doi.org/10.1073/pnas.2401686121
  • Primary Citation of Related Structures:  
    7QEC, 7QEH, 7QFG, 7QFI, 7QFJ, 7QFK, 7QFL, 7QLD, 7QLE, 7QLH, 8ALU, 8AOL, 8BT9, 8Q1O

  • PubMed Abstract: 

    S-layers are crystalline arrays found on bacterial and archaeal cells. Lactobacillus is a diverse family of bacteria known especially for potential gut health benefits. This study focuses on the S-layer proteins from Lactobacillus acidophilus and Lactobacillus amylovorus common in the mammalian gut. Atomic resolution structures of Lactobacillus S-layer proteins SlpA and SlpX exhibit domain swapping, and the obtained assembly model of the main S-layer protein SlpA aligns well with prior electron microscopy and mutagenesis data. The S-layer's pore size suggests a protective role, with charged areas aiding adhesion. A highly similar domain organization and interaction network are observed across the Lactobacillus genus. Interaction studies revealed conserved binding areas specific for attachment to teichoic acids. The structure of the SlpA S-layer and the suggested incorporation of SlpX as well as its interaction with teichoic acids lay the foundation for deciphering its role in immune responses and for developing effective treatments for a variety of infectious and bacteria-mediated inflammation processes, opening opportunities for targeted engineering of the S-layer or lactobacilli bacteria in general.


  • Organizational Affiliation

    Institute of Molecular Biosciences, University of Graz, Graz, Austria 8010.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
S-layer114Lactobacillus amylovorus GRL 1112Mutation(s): 0 
Gene Names: LA2_00970
UniProt
Find proteins for E4SK47 (Lactobacillus amylovorus (strain GRL 1112))
Explore E4SK47 
Go to UniProtKB:  E4SK47
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupE4SK47
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.190 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 38.633α = 90
b = 38.633β = 90
c = 142.441γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Arcimboldophasing
ARP/wARPmodel building
Cootmodel building

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Austrian Science FundAustriaP29432

Revision History  (Full details and data files)

  • Version 1.0: 2022-12-14
    Type: Initial release
  • Version 1.1: 2024-06-19
    Changes: Data collection, Database references