L-fuculose 1-phosphate aldolase

Experimental Data Snapshot

  • Resolution: 1.85 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.169 

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Structural characterization of an L-fuculose-1-phosphate aldolase from Klebsiella pneumoniae.

Lou, X.Zhang, J.Liu, S.Wang, R.Li, W.Liu, R.Zhang, Q.Bartlam, M.

(2022) Biochem Biophys Res Commun 607: 15-19

  • DOI: https://doi.org/10.1016/j.bbrc.2022.03.127
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Fuculose phosphate aldolases play an important role in glycolysis and gluconeogenesis pathways. L-fuculose 1-phosphate aldolase catalyzes the reversible cleavage of L-fuculose 1-phosphate to DHAP and L-lactaldehyde. Class II aldolases found in bacteria are linked to pathogenesis of human pathogens, and have potential applications in the biosynthesis of carbohydrates and other chiral compounds. Here we report the structure of a putative L-fuculose 1-phosphate aldolase (KpFucA) from the nosocomial pathogen Klebsiella pneumoniae to 1.85 Å resolution. The enzyme crystallizes in space group P422 with one monomer per asymmetric unit. Analytical ultracentrifugation analysis confirms that KpFucA is a tetramer in solution. A magnesium ion cofactor and sulfate ion were identified in the active pocket. Enzyme activity assays confirmed that KpFcuA has a strong preference for L-fuculose 1-phosphate as a substrate, but can also catalyze the cleavage of fructose-1,6-bisphosphate and glucose-6-phosphate. This work should provide a starting point for further investigation of the role of KpFucA in K. pneumoniae pathogenesis or in industrial applications.

  • Organizational Affiliation

    College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Nankai International Advanced Research Institute (Shenzhen Futian), Nankai University, Tianjin, 300071, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
L-fuculose phosphate aldolase215Klebsiella pneumoniaeMutation(s): 0 
Find proteins for A6TD81 (Klebsiella pneumoniae subsp. pneumoniae (strain ATCC 700721 / MGH 78578))
Explore A6TD81 
Go to UniProtKB:  A6TD81
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA6TD81
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.85 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.169 
  • Space Group: P 4 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 92.614α = 90
b = 92.614β = 90
c = 41.828γ = 90
Software Package:
Software NamePurpose
HKL-3000data reduction
HKL-3000data scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China31870053
National Natural Science Foundation of China (NSFC)China31800627

Revision History  (Full details and data files)

  • Version 1.0: 2022-04-13
    Type: Initial release
  • Version 1.1: 2023-11-29
    Changes: Data collection, Refinement description