1W0E

Crystal structure of human cytochrome P450 3A4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.244 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structures of Human Cytochrome P450 3A4 Bound to Metyrapone and Progesterone

Williams, P.A.Cosme, J.Vinkovic, D.M.Ward, A.Angove, H.C.Day, P.J.Vonrhein, C.Tickle, I.J.Jhoti, H.

(2004) Science 305: 683

  • DOI: 10.1126/science.1099736
  • Primary Citation of Related Structures:  1W0F, 1W0G

  • PubMed Abstract: 
  • Cytochromes P450 (P450s) metabolize a wide range of endogenous compounds and xenobiotics, such as pollutants, environmental compounds, and drug molecules. The microsomal, membrane-associated, P450 isoforms CYP3A4, CYP2D6, CYP2C9, CYP2C19, CYP2E1, and ...

    Cytochromes P450 (P450s) metabolize a wide range of endogenous compounds and xenobiotics, such as pollutants, environmental compounds, and drug molecules. The microsomal, membrane-associated, P450 isoforms CYP3A4, CYP2D6, CYP2C9, CYP2C19, CYP2E1, and CYP1A2 are responsible for the oxidative metabolism of more than 90% of marketed drugs. Cytochrome P450 3A4 (CYP3A4) metabolizes more drug molecules than all other isoforms combined. Here we report three crystal structures of CYP3A4: unliganded, bound to the inhibitor metyrapone, and bound to the substrate progesterone. The structures revealed a surprisingly small active site, with little conformational change associated with the binding of either compound. An unexpected peripheral binding site is identified, located above a phenylalanine cluster, which may be involved in the initial recognition of substrates or allosteric effectors.


    Organizational Affiliation

    Astex Technology, 436 Cambridge Science Park, Milton Road, Cambridge, CB4 0QA, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CYTOCHROME P450 3A4
A
485Homo sapiensGene Names: CYP3A4 (CYP3A3)
EC: 1.14.14.1, 1.14.13.67, 1.14.13.-, 1.14.13.97, 1.14.13.32, 1.14.13.157
Find proteins for P08684 (Homo sapiens)
Go to Gene View: CYP3A4
Go to UniProtKB:  P08684
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download SDF File 
Download CCD File 
A
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.244 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 77.940α = 90.00
b = 100.910β = 90.00
c = 131.000γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
CNXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-07-22
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance