Carbonyl Reductase Variant 4 (R123C/L209P/F183Y/V61K) from Serratia marcescens complexed with NADP+

Experimental Data Snapshot

  • Resolution: 2.45 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.203 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Stereoselective synthesis of chiral delta-lactones via an engineered carbonyl reductase.

Wang, T.Zhang, X.Y.Zheng, Y.C.Bai, Y.P.

(2021) Chem Commun (Camb) 57: 10584-10587

  • DOI: https://doi.org/10.1039/d1cc04542c
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    A carbonyl reductase variant, Sm CR M5 , from Serratia marcescens was obtained through structure-guided directed evolution. The variant showed improved specific activity (U mg -1 ) towards most of the 16 tested substrates and gave high stereoselectivities of up to 99% in the asymmetric synthesis of 13 γ-/δ-lactones. In particular, SmCR M5 showed a 13.8-fold higher specific activity towards the model substrate, i.e. , 5-oxodecanoic acid, and gave ( R )-δ-decalactone in 99% ee with a space-time yield (STY) of 301 g L -1 d -1 . The preparative synthesis of six δ-lactones in high yields and with high enantiopurities showed the feasibility of the biocatalytic synthesis of these high-value-added chemicals, providing a cost-effective and green alternative to noble-metal catalysis.

  • Organizational Affiliation

    State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China. ybai@ecust.edu.cn.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
3-oxoacyl-[acyl-carrier-protein] reductase
A, B
252Serratia marcescensMutation(s): 4 
Gene Names: fabGA8A12_06940AR325_11665BVG93_06205G3M86_05635G3M87_05635G3M88_05635G3M89_05635GV243_09700HMI62_09690
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Resolution: 2.45 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.203 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.841α = 90
b = 120.299β = 90
c = 120.664γ = 90
Software Package:
Software NamePurpose
HKL-2000data scaling
PDB_EXTRACTdata extraction
HKL-3000data reduction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-10-06
    Type: Initial release
  • Version 1.1: 2022-02-16
    Changes: Database references
  • Version 1.2: 2023-11-29
    Changes: Data collection, Refinement description