Crystal structure of cyclohexanone monooxygenase mutant (F249A, F280A and F435A) from Rhodococcus sp. Phi1 bound to NADP+

Experimental Data Snapshot

  • Resolution: 2.49 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 

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Biocatalytic Routes to Lactone Monomers for Polymer Production.

Messiha, H.L.Ahmed, S.T.Karuppiah, V.Suardiaz, R.Ascue Avalos, G.A.Fey, N.Yeates, S.Toogood, H.S.Mulholland, A.J.Scrutton, N.S.

(2018) Biochemistry 57: 1997-2008

  • DOI: https://doi.org/10.1021/acs.biochem.8b00169
  • Primary Citation of Related Structures:  
    6ER9, 6ERA

  • PubMed Abstract: 

    Monoterpenoids offer potential as biocatalytically derived monomer feedstocks for high-performance renewable polymers. We describe a biocatalytic route to lactone monomers menthide and dihydrocarvide employing Baeyer-Villiger monooxygenases (BVMOs) from Pseudomonas sp. HI-70 (CPDMO) and Rhodococcus sp. Phi1 (CHMO Phi1 ) as an alternative to organic synthesis. The regioselectivity of dihydrocarvide isomer formation was controlled by site-directed mutagenesis of three key active site residues in CHMO Phi1 . A combination of crystal structure determination, molecular dynamics simulations, and mechanistic modeling using density functional theory on a range of models provides insight into the origins of the discrimination of the wild type and a variant CHMO Phi1 for producing different regioisomers of the lactone product. Ring-opening polymerizations of the resultant lactones using mild metal-organic catalysts demonstrate their utility in polymer production. This semisynthetic approach utilizing a biocatalytic step, non-petroleum feedstocks, and mild polymerization catalysts allows access to known and also to previously unreported and potentially novel lactone monomers and polymers.

  • Organizational Affiliation

    Centre for Computational Chemistry, School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , U.K.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cyclohexanone monooxygenase
A, B
549Rhodococcus sp. Phi1Mutation(s): 3 
Gene Names: chnB
Find proteins for Q84H73 (Rhodococcus sp. Phi1)
Explore Q84H73 
Go to UniProtKB:  Q84H73
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ84H73
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.49 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.86α = 90
b = 64.94β = 97.03
c = 187.59γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PHENIXmodel building

Structure Validation

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Ligand Structure Quality Assessment 

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Engineering and Physical Sciences Research CouncilUnited KingdomEP/M013219/1

Revision History  (Full details and data files)

  • Version 1.0: 2018-09-26
    Type: Initial release
  • Version 1.1: 2024-01-17
    Changes: Data collection, Database references, Refinement description