1Z11

Crystal Structure of Human Microsomal P450 2A6 with Methoxsalen Bound


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structures of human microsomal cytochrome P450 2A6 complexed with coumarin and methoxsalen

Yano, J.K.Hsu, M.H.Griffin, K.J.Stout, C.D.Johnson, E.F.

(2005) Nat.Struct.Mol.Biol. 12: 822-823

  • DOI: 10.1038/nsmb971
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Human microsomal cytochrome P450 2A6 (CYP2A6) contributes extensively to nicotine detoxication but also activates tobacco-specific procarcinogens to mutagenic products. The CYP2A6 structure shows a compact, hydrophobic active site with one hydrogen b ...

    Human microsomal cytochrome P450 2A6 (CYP2A6) contributes extensively to nicotine detoxication but also activates tobacco-specific procarcinogens to mutagenic products. The CYP2A6 structure shows a compact, hydrophobic active site with one hydrogen bond donor, Asn297, that orients coumarin for regioselective oxidation. The inhibitor methoxsalen effectively fills the active site cavity without substantially perturbing the structure. The structure should aid the design of inhibitors to reduce smoking and tobacco-related cancers.


    Organizational Affiliation

    Department of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, California 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
cytochrome P450, family 2, subfamily A, polypeptide 6
A, B, C, D
476Homo sapiensMutation(s): 0 
Gene Names: CYP2A6 (CYP2A3)
EC: 1.14.13.-
Find proteins for P11509 (Homo sapiens)
Go to Gene View: CYP2A6
Go to UniProtKB:  P11509
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download SDF File 
Download CCD File 
A, B, C, D
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
8MO
Query on 8MO

Download SDF File 
Download CCD File 
A, B, C, D
METHOXSALEN
9-METHOXY-7H-FURO[3,2-G][1]BENZOPYRAN-7-ONE
C12 H8 O4
QXKHYNVANLEOEG-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
8MOKi: 40 - 1900 nM (93) BINDINGDB
8MOKd: 1600 - 11000 nM (93) BINDINGDB
8MOKd: 1900 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.219 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 70.660α = 90.00
b = 159.030β = 92.00
c = 103.880γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
AMoREphasing
HKL-2000data collection
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-08-16
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance