6THS

High resolution crystal structure of Leaf-branch cutinase S165A variant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.10 Å
  • R-Value Free: 0.167 
  • R-Value Work: 0.136 
  • R-Value Observed: 0.138 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

An engineered PET depolymerase to break down and recycle plastic bottles.

Tournier, V.Topham, C.M.Gilles, A.David, B.Folgoas, C.Moya-Leclair, E.Kamionka, E.Desrousseaux, M.L.Texier, H.Gavalda, S.Cot, M.Guemard, E.Dalibey, M.Nomme, J.Cioci, G.Barbe, S.Chateau, M.Andre, I.Duquesne, S.Marty, A.

(2020) Nature 580: 216-219

  • DOI: 10.1038/s41586-020-2149-4
  • Primary Citation of Related Structures:  
    6THS, 6THT

  • PubMed Abstract: 
  • Present estimates suggest that of the 359 million tons of plastics produced annually worldwide 1 , 150-200 million tons accumulate in landfill or in the natural environment 2 . Poly(ethylene terephthalate) (PET) is the most abundant polyester plastic, with almost 70 million tons manufactured annually worldwide for use in textiles and packaging 3 ...

    Present estimates suggest that of the 359 million tons of plastics produced annually worldwide 1 , 150-200 million tons accumulate in landfill or in the natural environment 2 . Poly(ethylene terephthalate) (PET) is the most abundant polyester plastic, with almost 70 million tons manufactured annually worldwide for use in textiles and packaging 3 . The main recycling process for PET, via thermomechanical means, results in a loss of mechanical properties 4 . Consequently, de novo synthesis is preferred and PET waste continues to accumulate. With a high ratio of aromatic terephthalate units-which reduce chain mobility-PET is a polyester that is extremely difficult to hydrolyse 5 . Several PET hydrolase enzymes have been reported, but show limited productivity 6,7 . Here we describe an improved PET hydrolase that ultimately achieves, over 10 hours, a minimum of 90 per cent PET depolymerization into monomers, with a productivity of 16.7 grams of terephthalate per litre per hour (200 grams per kilogram of PET suspension, with an enzyme concentration of 3 milligrams per gram of PET). This highly efficient, optimized enzyme outperforms all PET hydrolases reported so far, including an enzyme 8,9 from the bacterium Ideonella sakaiensis strain 201-F6 (even assisted by a secondary enzyme 10 ) and related improved variants 11-14 that have attracted recent interest. We also show that biologically recycled PET exhibiting the same properties as petrochemical PET can be produced from enzymatically depolymerized PET waste, before being processed into bottles, thereby contributing towards the concept of a circular PET economy.


    Organizational Affiliation

    Carbios, Biopôle Clermont Limagne, Saint-Beauzire, France. alain.marty@carbios.fr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
LCCA258uncultured bacteriumMutation(s): 1 
EC: 3.1.1.74 (PDB Primary Data), 3.1.1.101 (UniProt)
UniProt
Find proteins for G9BY57 (Unknown prokaryotic organism)
Explore G9BY57 
Go to UniProtKB:  G9BY57
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupG9BY57
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DIO
Query on DIO

Download Ideal Coordinates CCD File 
B [auth A]1,4-DIETHYLENE DIOXIDE
C4 H8 O2
RYHBNJHYFVUHQT-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.10 Å
  • R-Value Free: 0.167 
  • R-Value Work: 0.136 
  • R-Value Observed: 0.138 
  • Space Group: P 63
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 109.604α = 90
b = 109.604β = 90
c = 35.287γ = 120
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Released Date: 2020-04-22 
  • Deposition Author(s): Nomme, J.

Revision History  (Full details and data files)

  • Version 1.0: 2020-04-22
    Type: Initial release