7SVK

Bile Salt Hydrolase from Lactobacillus reuteri


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.66 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Bile salt hydrolases shape the bile acid landscape and restrict Clostridioides difficile growth in the murine gut.

Foley, M.H.Walker, M.E.Stewart, A.K.O'Flaherty, S.Gentry, E.C.Patel, S.Beaty, V.V.Allen, G.Pan, M.Simpson, J.B.Perkins, C.Vanhoy, M.E.Dougherty, M.K.McGill, S.K.Gulati, A.S.Dorrestein, P.C.Baker, E.S.Redinbo, M.R.Barrangou, R.Theriot, C.M.

(2023) Nat Microbiol 8: 611-628

  • DOI: https://doi.org/10.1038/s41564-023-01337-7
  • Primary Citation of Related Structures:  
    7SVE, 7SVF, 7SVG, 7SVH, 7SVI, 7SVJ, 7SVK

  • PubMed Abstract: 

    Bile acids (BAs) mediate the crosstalk between human and microbial cells and influence diseases including Clostridioides difficile infection (CDI). While bile salt hydrolases (BSHs) shape the BA pool by deconjugating conjugated BAs, the basis for their substrate selectivity and impact on C. difficile remain elusive. Here we survey the diversity of BSHs in the gut commensals Lactobacillaceae, which are commonly used as probiotics, and other members of the human gut microbiome. We structurally pinpoint a loop that predicts BSH preferences for either glycine or taurine substrates. BSHs with varying specificities were shown to restrict C. difficile spore germination and growth in vitro and colonization in pre-clinical in vivo models of CDI. Furthermore, BSHs reshape the pool of microbial conjugated bile acids (MCBAs) in the murine gut, and these MCBAs can further restrict C. difficile virulence in vitro. The recognition of conjugated BAs by BSHs defines the resulting BA pool, including the expansive MCBAs. This work provides insights into the structural basis of BSH mechanisms that shape the BA landscape and promote colonization resistance against C. difficile.


  • Organizational Affiliation

    Department of Pathobiology and Population Health, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Choloylglycine hydrolase331Limosilactobacillus reuteriMutation(s): 0 
Gene Names: LRLP16767_LR202_00948
EC: 3.5.1.24
UniProt
Find proteins for A0A0U5F994 (Limosilactobacillus reuteri)
Explore A0A0U5F994 
Go to UniProtKB:  A0A0U5F994
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0U5F994
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.66 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 
  • Space Group: C 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 140.26α = 90
b = 176.682β = 90
c = 42.238γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM135218

Revision History  (Full details and data files)

  • Version 1.0: 2023-01-25
    Type: Initial release
  • Version 1.1: 2023-05-24
    Changes: Database references
  • Version 1.2: 2023-10-25
    Changes: Data collection, Refinement description