Bfo2294: Tannerella forsythia 2-Keto-3-deoxy-6-phosphogluconate aldolase (KDPG) and 4-Hydroxy-2-oxoglutarate aldolase (KHG)

Experimental Data Snapshot

  • Resolution: 2.20 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.181 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Degradation of chondroitin sulfate A by a PUL-like operon in Tannerella forsythia.

Nguyen, P.Eshaque, R.Garland, B.A.Dang, A.Suits, M.D.L.

(2022) PLoS One 17: e0272904-e0272904

  • DOI: https://doi.org/10.1371/journal.pone.0272904
  • Primary Citation of Related Structures:  
    8DI0, 8DI1

  • PubMed Abstract: 

    Advanced periodontitis has been shown to have strong association with the residence of the bacterial consortia known as the red complex comprised by Porphyromonas gingivalis, Tannerella forsythia, and Treponema denticola. T. forsythia shares a distant genetic linkage to Bacteroidetes thetaiotaomicron and may therefore produce analogous polysaccharide utilization loci (PUL) which enable complex carbohydrate degradation, import, and use, although this capacity has yet to be demonstrated. Chondroitin sulfate A is a linear, sulfated carbohydrate linked to periodontal disease as the principal species of glycosaminoglycan appended on the surface of cortical bone of teeth and in supporting dental ligaments. Through genomic comparisons with B. thetaiotaomicron, a new PUL-like operon (Bfo2285-Bfo2295, and Bfo3043) was identified in T. forsythia and the crystal structure of two proteins from this PUL-like operon, Bfo2290 and Bfo2294, were reported using X-ray crystallography. Enzyme kinetics for Bfo2290 were reported using a pH-dependent assay and suggested a Km of 0.75 mg/ml ± 0.60 mg/ml, Kcat of 3.74 min-1 ± 0.88 min-1, and Vmax of 7.48 μM/min ± 1.76 μM/min with partially degraded chondroitin sulfate A. Fluorophore-assisted carbohydrate electrophoresis was used to show the processive degradation of chondroitin sulfate A by the proteins encoded in T. forsythia PUL-like operon, and revealed Bfo2291 and Bfo2290 to be an endolytic chondroitin sulfate A lyase and exolytic ΔDi-4S chondroitin sulfate A sulfatase, respectively.

  • Organizational Affiliation

    Department of Chemistry and Biochemistry, Wilfrid Laurier University, Waterloo, Ontario, Canada.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
KDPG and KHG aldolase226Tannerella forsythia 92A2Mutation(s): 0 
Gene Names: BFO_2294
Find proteins for G8UJX2 (Tannerella forsythia (strain ATCC 43037 / JCM 10827 / CCUG 21028 A / KCTC 5666 / FDC 338))
Explore G8UJX2 
Go to UniProtKB:  G8UJX2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupG8UJX2
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.20 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.181 
  • Space Group: P 2 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.15α = 90
b = 98.15β = 90
c = 98.15γ = 90
Software Package:
Software NamePurpose
autoPROCdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Natural Sciences and Engineering Research Council (NSERC, Canada)CanadaDDG-2020-00007
Natural Sciences and Engineering Research Council (NSERC, Canada)CanadaRGPIN-2014-05018

Revision History  (Full details and data files)

  • Version 1.0: 2022-08-17
    Type: Initial release
  • Version 1.1: 2022-10-12
    Changes: Database references
  • Version 1.2: 2023-10-18
    Changes: Data collection, Refinement description