5UFG

Crystal Structure of CYP2B6 (Y226H/K262R/I114V) in complex with myrtenyl bromide

  • Classification: OXIDOREDUCTASE
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli
  • Mutation(s): Yes 

  • Deposited: 2017-01-04 Released: 2017-04-12 
  • Deposition Author(s): Shah, M.B., Halpert, J.R.
  • Funding Organization(s): National Institutes of Health/National Institute of Environmental Health Sciences (NIH/NIEHS)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.76 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.177 

Starting Model: experimental
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This is version 1.4 of the entry. See complete history


Literature

Halogen-pi Interactions in the Cytochrome P450 Active Site: Structural Insights into Human CYP2B6 Substrate Selectivity.

Shah, M.B.Liu, J.Zhang, Q.Stout, C.D.Halpert, J.R.

(2017) ACS Chem Biol 12: 1204-1210

  • DOI: https://doi.org/10.1021/acschembio.7b00056
  • Primary Citation of Related Structures:  
    5UAP, 5UDA, 5UEC, 5UFG

  • PubMed Abstract: 

    Numerous cytochrome P450 (CYP) 2B6 substrates including drugs and environmental chemicals are halogenated. To assess the role of halogen-π bonds in substrate selectivity and orientation in the active site, structures of four CYP2B6 monoterpenoid complexes were solved by X-ray crystallography. Bornyl bromide exhibited dual orientations in the active site with the predominant orientation revealing a bromine-π bond with the Phe108 side chain. Bornane demonstrated two orientations with equal occupancy; in both, the C2 atom that bears the bromine in bornyl bromide was displaced by more than 2.5 Å compared with the latter complex. The bromine in myrtenyl bromide π-bonded with Phe297 in CYP2B6, whereas the two major orientations in the active site mutant I114V exhibited bromine-π interactions with two additional residues, Phe108 and Phe115. Analysis of existing structures suggests that halogen-π interactions may be unique to the CYP2B enzymes within CYP family 2 but are also important for CYP3A enzymes.


  • Organizational Affiliation

    School of Pharmacy, University of Connecticut , Storrs, Connecticut, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome P450 2B6476Homo sapiensMutation(s): 12 
Gene Names: CYP2B6
EC: 1.14.13
UniProt & NIH Common Fund Data Resources
Find proteins for P20813 (Homo sapiens)
Explore P20813 
Go to UniProtKB:  P20813
PHAROS:  P20813
GTEx:  ENSG00000197408 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP20813
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.76 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.177 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 77.12α = 90
b = 77.12β = 90
c = 202.201γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
iMOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Environmental Health Sciences (NIH/NIEHS)United StatesES003619

Revision History  (Full details and data files)

  • Version 1.0: 2017-04-12
    Type: Initial release
  • Version 1.1: 2017-05-31
    Changes: Database references
  • Version 1.2: 2017-09-27
    Changes: Author supporting evidence
  • Version 1.3: 2019-12-18
    Changes: Author supporting evidence
  • Version 1.4: 2023-10-04
    Changes: Data collection, Database references, Refinement description