Crystal structure of recombinant glucuronoyl esterase from Sporotrichum thermophile determined at 1.55 A resolution

Experimental Data Snapshot

  • Resolution: 1.55 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 

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This is version 1.2 of the entry. See complete history


The structure of a novel glucuronoyl esterase from Myceliophthora thermophila gives new insights into its role as a potential biocatalyst.

Charavgi, M.D.Dimarogona, M.Topakas, E.Christakopoulos, P.Chrysina, E.D.

(2013) Acta Crystallogr D Biol Crystallogr 69: 63-73

  • DOI: https://doi.org/10.1107/S0907444912042400
  • Primary Citation of Related Structures:  
    4G4G, 4G4I, 4G4J

  • PubMed Abstract: 

    The increasing demand for the development of efficient biocatalysts is a consequence of their broad industrial applications. Typical difficulties that are encountered during their exploitation in a variety of processes are interconnected with factors such as temperature, pH, product inhibitors etc. To eliminate these, research has been directed towards the identification of new enzymes that would comply with the required standards. To this end, the recently discovered glucuronoyl esterases (GEs) are an enigmatic family within the carbohydrate esterase (CE) family. Structures of the thermophilic StGE2 esterase from Myceliophthora thermophila (synonym Sporotrichum thermophile), a member of the CE15 family, and its S213A mutant were determined at 1.55 and 1.9 Å resolution, respectively. The first crystal structure of the S213A mutant in complex with a substrate analogue, methyl 4-O-methyl-β-D-glucopyranuronate, was determined at 2.35 Å resolution. All of the three-dimensional protein structures have an α/β-hydrolase fold with a three-layer αβα-sandwich architecture and a Rossmann topology and comprise one molecule per asymmetric unit. These are the first crystal structures of a thermophilic GE both in an unliganded form and bound to a substrate analogue, thus unravelling the organization of the catalytic triad residues and their neighbours lining the active site. The knowledge derived offers novel insights into the key structural elements that drive the hydrolysis of glucuronic acid esters.

  • Organizational Affiliation

    Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation, Athens, Greece.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
4-O-methyl-glucuronoyl methylesterase433Thermothelomyces thermophilus ATCC 42464Mutation(s): 0 
Gene Names: MYCTH_55568
EC: 3.1.1
Find proteins for G2QJR6 (Thermothelomyces thermophilus (strain ATCC 42464 / BCRC 31852 / DSM 1799))
Explore G2QJR6 
Go to UniProtKB:  G2QJR6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupG2QJR6
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on GOL

Download Ideal Coordinates CCD File 
P [auth A],
Q [auth A]
C3 H8 O3
Query on EDO

Download Ideal Coordinates CCD File 
B [auth A]
C [auth A]
D [auth A]
E [auth A]
F [auth A]
B [auth A],
C [auth A],
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
I [auth A],
J [auth A],
K [auth A],
L [auth A],
M [auth A],
N [auth A],
O [auth A]
C2 H6 O2
Experimental Data & Validation

Experimental Data

  • Resolution: 1.55 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.973α = 90
b = 58.735β = 90
c = 136.157γ = 90
Software Package:
Software NamePurpose
DNAdata collection
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-01-02
    Type: Initial release
  • Version 1.1: 2013-01-23
    Changes: Database references
  • Version 1.2: 2023-09-13
    Changes: Data collection, Database references, Derived calculations, Refinement description