Crystal structure of a PSH1 in complex with J1K

Experimental Data Snapshot

  • Resolution: 2.20 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.225 

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Ligand Structure Quality Assessment 

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Multiple Substrate Binding Mode-Guided Engineering of a Thermophilic PET Hydrolase.

Pfaff, L.Gao, J.Li, Z.Jackering, A.Weber, G.Mican, J.Chen, Y.Dong, W.Han, X.Feiler, C.G.Ao, Y.F.Badenhorst, C.P.S.Bednar, D.Palm, G.J.Lammers, M.Damborsky, J.Strodel, B.Liu, W.Bornscheuer, U.T.Wei, R.

(2022) ACS Catal 12: 9790-9800

  • DOI: https://doi.org/10.1021/acscatal.2c02275
  • Primary Citation of Related Structures:  
    7CUV, 7E30, 7E31, 7W66, 7W69, 7W6C, 7W6O, 7W6Q

  • PubMed Abstract: 

    Thermophilic polyester hydrolases (PES-H) have recently enabled biocatalytic recycling of the mass-produced synthetic polyester polyethylene terephthalate (PET), which has found widespread use in the packaging and textile industries. The growing demand for efficient PET hydrolases prompted us to solve high-resolution crystal structures of two metagenome-derived enzymes (PES-H1 and PES-H2) and notably also in complex with various PET substrate analogues. Structural analyses and computational modeling using molecular dynamics simulations provided an understanding of how product inhibition and multiple substrate binding modes influence key mechanistic steps of enzymatic PET hydrolysis. Key residues involved in substrate-binding and those identified previously as mutational hotspots in homologous enzymes were subjected to mutagenesis. At 72 °C, the L92F/Q94Y variant of PES-H1 exhibited 2.3-fold and 3.4-fold improved hydrolytic activity against amorphous PET films and pretreated real-world PET waste, respectively. The R204C/S250C variant of PES-H1 had a 6.4 °C higher melting temperature than the wild-type enzyme but retained similar hydrolytic activity. Under optimal reaction conditions, the L92F/Q94Y variant of PES-H1 hydrolyzed low-crystallinity PET materials 2.2-fold more efficiently than LCC ICCG, which was previously the most active PET hydrolase reported in the literature. This property makes the L92F/Q94Y variant of PES-H1 a good candidate for future applications in industrial plastic recycling processes.

  • Organizational Affiliation

    Department of Biotechnology & Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17487 Greifswald, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
258unidentifiedMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
J1K (Subject of Investigation/LOI)
Query on J1K

Download Ideal Coordinates CCD File 
C [auth B]4-(2-hydroxyethylcarbamoyl)benzoic acid
C10 H11 N O4
Experimental Data & Validation

Experimental Data

  • Resolution: 2.20 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.225 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.677α = 90
b = 56.193β = 93.91
c = 100.25γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
XDSdata reduction
Aimlessdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History & Funding Information

Deposition Data

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

Revision History  (Full details and data files)

  • Version 1.0: 2022-09-14
    Type: Initial release
  • Version 1.1: 2023-11-29
    Changes: Data collection, Refinement description