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 
  • R-Value Observed: 0.221 

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:  
    1Z11, 1Z10

  • 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 bond donor, Asn297, that orients coumarin for regioselective oxidation ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
cytochrome P450, family 2, subfamily A, polypeptide 6A, B, C, D476Homo sapiensMutation(s): 0 
Gene Names: CYP2A6CYP2A3
EC: 1.14.14.1 (PDB Primary Data), 1.14.13 (UniProt)
Find proteins for P11509 (Homo sapiens)
Explore P11509 
Go to UniProtKB:  P11509
NIH Common Fund Data Resources
PHAROS:  P11509
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
8MOKi:  1900   nM  BindingDB
8MOKi:  250   nM  BindingDB
8MOKd:  11000   nM  BindingDB
8MOKd:  1600   nM  BindingDB
8MOKi:  800   nM  BindingDB
8MOKi:  40   nM  BindingDB
8MOKd:  1900   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.221 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.66α = 90
b = 159.03β = 92
c = 103.88γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
AMoREphasing
CNSrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

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