Bacetrial Cocaine Esterase with mutations T172R/G173Q/V116K/S117A/A51L, bound to benzoic acid

Experimental Data Snapshot

  • Resolution: 2.20 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.174 

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This is version 1.2 of the entry. See complete history


Computational Design and Crystal Structure of a Highly Efficient Benzoylecgonine Hydrolase.

Chen, X.Deng, X.Zhang, Y.Wu, Y.Yang, K.Li, Q.Wang, J.Yao, W.Tong, J.Xie, T.Hou, S.Yao, J.

(2021) Angew Chem Int Ed Engl 60: 21959-21965

  • DOI: https://doi.org/10.1002/anie.202108559
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Benzoylecgonine (BZE) is the major toxic metabolite of cocaine and is responsible for the long-term cocaine-induced toxicity owing to its long residence time in humans. BZE is also the main contaminant following cocaine consumption. Here, we identified the bacterial cocaine esterase (CocE) as a BZE-metabolizing enzyme (BZEase), which can degrade BZE into biological inactive metabolites (ecgonine and benzoic acid). CocE was redesigned by a reactant-state-based enzyme design theory. An encouraging mutant denoted as BZEase2, presented a >400-fold improved catalytic efficiency against BZE compared with wild-type (WT) CocE. In vivo, a single dose of BZEase2 (1 mg kg -1 , IV) could eliminate nearly all BZE within only two minutes, suggesting the enzyme has the potential for cocaine overdose treatment and BZE elimination in the environment by accelerating BZE clearance. The crystal structure of a designed BZEase was also determined.

  • Organizational Affiliation

    College of Pharmacy, School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang, 311121, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cocaine esterase574Rhodococcus sp. MB1 'Bresler 1999Mutation(s): 5 
Gene Names: cocE
Find proteins for Q9L9D7 (Rhodococcus sp. (strain MB1 Bresler))
Explore Q9L9D7 
Go to UniProtKB:  Q9L9D7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9L9D7
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.20 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.174 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 106.022α = 90
b = 106.022β = 90
c = 222.284γ = 120
Software Package:
Software NamePurpose
HKL-3000data reduction
HKL-3000data scaling
PDB_EXTRACTdata extraction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-09-15
    Type: Initial release
  • Version 1.1: 2022-02-16
    Changes: Database references
  • Version 1.2: 2023-11-29
    Changes: Data collection, Refinement description