1.8 Angstrom crystal structure of Listeria monocytogenes Lmo0184 alpha-1,6-glucosidase

Experimental Data Snapshot

  • Resolution: 1.80 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.154 
  • R-Value Observed: 0.155 

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Ligand Structure Quality Assessment 

This is version 1.3 of the entry. See complete history


Structure to function of an alpha-glucan metabolic pathway that promotes Listeria monocytogenes pathogenesis.

Light, S.H.Cahoon, L.A.Halavaty, A.S.Freitag, N.E.Anderson, W.F.

(2016) Nat Microbiol 2: 16202-16202

  • DOI: https://doi.org/10.1038/nmicrobiol.2016.202
  • Primary Citation of Related Structures:  
    4KMQ, 5DO8, 5F7P, 5F7Q, 5F7R, 5F7S, 5F7U, 5F7V

  • PubMed Abstract: 

    Here we employ a 'systems structural biology' approach to functionally characterize an unconventional α-glucan metabolic pathway from the food-borne pathogen Listeria monocytogenes (Lm). Crystal structure determination coupled with basic biochemical and biophysical assays allowed for the identification of anabolic, transport, catabolic and regulatory portions of the cycloalternan pathway. These findings provide numerous insights into cycloalternan pathway function and reveal the mechanism of repressor, open reading frame, kinase (ROK) transcription regulators. Moreover, by developing a structural overview we were able to anticipate the cycloalternan pathway's role in the metabolism of partially hydrolysed starch derivatives and demonstrate its involvement in Lm pathogenesis. These findings suggest that the cycloalternan pathway plays a role in interspecies resource competition-potentially within the host gastrointestinal tract-and establish the methodological framework for characterizing bacterial systems of unknown function.

  • Organizational Affiliation

    Center for Structural Genomics of Infectious Diseases and Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Lmo0184 proteinA [auth B],
B [auth A],
555Listeria monocytogenes EGD-eMutation(s): 0 
Gene Names: lmo0184
Find proteins for Q8YAE6 (Listeria monocytogenes serovar 1/2a (strain ATCC BAA-679 / EGD-e))
Explore Q8YAE6 
Go to UniProtKB:  Q8YAE6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8YAE6
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on BTB

Download Ideal Coordinates CCD File 
F [auth B],
I [auth A],
M [auth C]
C8 H19 N O5
Query on BGC

Download Ideal Coordinates CCD File 
D [auth B],
G [auth A],
J [auth C]
C6 H12 O6
Query on CL

Download Ideal Coordinates CCD File 
E [auth B],
H [auth A],
K [auth C],
L [auth C]
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.123α = 90
b = 103.937β = 90
c = 193.79γ = 90
Software Package:
Software NamePurpose
HKL-3000data reduction
HKL-3000data scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-09-30
    Type: Initial release
  • Version 1.1: 2016-11-23
    Changes: Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary
  • Version 1.3: 2023-09-27
    Changes: Data collection, Database references, Refinement description, Structure summary