1JU4

BACTERIAL COCAINE ESTERASE COMPLEX WITH PRODUCT


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.63 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of a bacterial cocaine esterase.

Larsen, N.A.Turner, J.M.Stevens, J.Rosser, S.J.Basran, A.Lerner, R.A.Bruce, N.C.Wilson, I.A.

(2002) Nat.Struct.Mol.Biol. 9: 17-21

  • DOI: 10.1038/nsb742
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Here we report the first structure of a cocaine-degrading enzyme. The bacterial esterase, cocE, hydrolyzes pharmacologically active (-)-cocaine to a non-psychoactive metabolite with a rate faster than any other reported cocaine esterase (kcat = 7.8 s ...

    Here we report the first structure of a cocaine-degrading enzyme. The bacterial esterase, cocE, hydrolyzes pharmacologically active (-)-cocaine to a non-psychoactive metabolite with a rate faster than any other reported cocaine esterase (kcat = 7.8 s-1 and KM = 640 nM). Because of the high catalytic proficiency of cocE, it is an attractive candidate for novel protein-based therapies for cocaine overdose. The crystal structure of cocE, solved by multiple anomalous dispersion (MAD) methods, reveals that cocE is a serine esterase composed of three domains: (i) a canonical alpha/beta hydrolase fold (ii) an alpha-helical domain that caps the active site and (iii) a jelly-roll-like beta-domain that interacts extensively with the other two domains. The active site was identified within the interface of all three domains by analysis of the crystal structures of transition state analog adduct and product complexes, which were refined at 1.58 A and 1.63 A resolution, respectively. These structural studies suggest that substrate recognition arises partly from interactions between the benzoyl moiety of cocaine and a highly evolved specificity pocket.


    Organizational Affiliation

    Department of Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Rd., La Jolla, California 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
cocaine esterase
A
583Rhodococcus sp. (strain MB1 Bresler)Mutation(s): 0 
Gene Names: cocE
EC: 3.1.1.84
Find proteins for Q9L9D7 (Rhodococcus sp. (strain MB1 Bresler))
Go to UniProtKB:  Q9L9D7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BEZ
Query on BEZ

Download SDF File 
Download CCD File 
A
BENZOIC ACID
C7 H6 O2
WPYMKLBDIGXBTP-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.63 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.190 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 106.216α = 90.00
b = 106.216β = 90.00
c = 222.210γ = 120.00
Software Package:
Software NamePurpose
SOLVEphasing
SCALEPACKdata scaling
DENZOdata reduction
ARP/wARPmodel building
SHELXL-97refinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-12-21
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-01-31
    Type: Experimental preparation