1.9 Angstrom resolution crystal structure of uncharacterized protein lmo2446 from Listeria monocytogenes EGD-e

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.151 
  • R-Value Observed: 0.153 

wwPDB Validation   3D Report Full Report

This is version 1.2 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
Lmo2446 protein1,084Listeria monocytogenes EGD-eMutation(s): 0 
Gene Names: lmo2446
Find proteins for Q8Y4J2 (Listeria monocytogenes serovar 1/2a (strain ATCC BAA-679 / EGD-e))
Explore Q8Y4J2 
Go to UniProtKB:  Q8Y4J2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8Y4J2
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 164.858α = 90
b = 102.359β = 104.86
c = 74.334γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
HKL-3000data reduction
HKL-3000data scaling

Structure Validation

View Full Validation Report

Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2013-05-29
    Type: Initial release
  • Version 1.1: 2016-11-23
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Refinement description