Crystal structure of fumarylpyruvate hydrolase from Pseudomonas aeruginosa in complex with Mn2+ and pyruvate

Experimental Data Snapshot

  • Resolution: 1.98 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.186 

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Sequence, structure and function-based classification of the broadly conserved FAH superfamily reveals two distinct fumarylpyruvate hydrolase subfamilies.

Hong, H.Seo, H.Park, W.Kim, K.J.

(2020) Environ Microbiol 22: 270-285

  • DOI: https://doi.org/10.1111/1462-2920.14844
  • Primary Citation of Related Structures:  
    6J57, 6J5X, 6J5Y

  • PubMed Abstract: 

    Fumarylacetoacetate hydrolase (FAH) superfamily proteins are found ubiquitously in microbial pathways involved in the catabolism of aromatic substances. Although extensive bioinformatic data on these proteins have been acquired, confusion caused by problems with the annotation of these proteins hinders research into determining their physiological functions. Here we classify 606 FAH superfamily proteins using a maximum likelihood (ML) phylogenetic tree, comparative gene-neighbourhood patterns and in vitro enzyme assays. The FAH superfamily proteins used for the analyses are divided into five distinct subfamilies, and two of them, FPH-A and FPH-B, contain the majority of the proteins of undefined function. These subfamilies include clusters designated FPH-I and FPH-II, respectively, which include two distinct types of fumarylpyruvate hydrolase (FPH), an enzyme involved in the final step of the gentisate pathway. We determined the crystal structures of these FPH enzymes at 2.0 Å resolutions and investigate the substrate binding mode by which these types of enzymes can accommodate fumarylpyruvate as a substrate. Consequentially, we identify the molecular signatures of the two types of FPH enzymes among the broadly conserved FAH superfamily proteins. Our studies allowed us to predict the relationship of unknown FAH superfamily proteins using their sequence information.

  • Organizational Affiliation

    Structural and Molecular Biology Laboratory, School of Life Sciences, KNU Creative BioResearch Group, Kyungpook National University, Daegu, 702701, Republic of Korea.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
FAA hydrolase family protein239Pseudomonas aeruginosaMutation(s): 0 
Gene Names: C8257_14365PAMH19_5939
Find proteins for Q9I111 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9I111 
Go to UniProtKB:  Q9I111
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9I111
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.98 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.186 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.09α = 90
b = 61.029β = 90
c = 104.646γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
HKL-2000data 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: 2019-12-18
    Type: Initial release
  • Version 1.1: 2020-01-15
    Changes: Database references
  • Version 2.0: 2023-11-15
    Changes: Atomic model, Data collection, Database references, Derived calculations
  • Version 2.1: 2023-11-22
    Changes: Refinement description