1QMQ

Optical detection of cytochrome P450 by sensitizer-linked substrates

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 2.0 of the entry. See complete history. 

Literature

Optical Detection of Cytochrome P450 by Sensitizer-Linked Substrates

Dmochowski, I.J., Crane, B.R., Wilker, J.J., Winkler, J.R., Gray, H.B.

(1999) Proc.Natl.Acad.Sci.USA 96: 12987


  • PubMed Abstract: 

    • The ability to detect, characterize, and manipulate specific biomolecules in complex media is critical for understanding metabolic processes. Particularly important targets are oxygenases (cytochromes P450) involved in drug metabolism and many diseas ...

    The ability to detect, characterize, and manipulate specific biomolecules in complex media is critical for understanding metabolic processes. Particularly important targets are oxygenases (cytochromes P450) involved in drug metabolism and many disease states, including liver and kidney dysfunction, neurological disorders, and cancer. We have found that Ru photosensitizers linked to P450 substrates specifically recognize submicromolar cytochrome P450(cam) in the presence of other heme proteins. In the P450:Ru-substrate conjugates, energy transfer to the heme dramatically accelerates the Ru-luminescence decay. The crystal structure of a P450(cam):Ru-adamantyl complex reveals access to the active center via a channel whose depth (Ru-Fe distance is 21 A) is virtually the same as that extracted from an analysis of the energy-transfer kinetics. Suitably constructed libraries of sensitizer-linked substrates could be employed to probe the steric and electronic properties of buried active sites.

    Organizational Affiliation: 

    Beckman Institute, California Institute of Technology, Pasadena, CA 91125, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CYTOCHROME P450
A
414Pseudomonas putidaMutation(s): 1 
Gene Names: camC (cyp101)
EC: 1.14.15.1
Find proteins for P00183 (Pseudomonas putida)
Go to UniProtKB:  P00183
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACT
Query on ACT
Download SDF File 
Download CCD File 
A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
DRB
Query on DRB
Download SDF File 
Download CCD File 
A
DELTA-BIS(2,2'-BIPYRIDINE)-(5-METHYL-2-2'-BIPYRIDINE)-C9-ADAMANTANE RUTHENIUM (II)
C50 H57 N7 O Ru
IGSCYCAKHRXAKK-KBBCMHLPSA-N
 Ligand Interaction
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: 1.55 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.216 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 65.390α = 90.00
b = 74.470β = 90.00
c = 91.730γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
SCALEPACKdata scaling
CNSphasing
DENZOdata reduction

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-10-06
    Type: Initial release
  • Version 1.1: 2012-03-28
    Type: Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Other, Refinement description, Structure summary, Version format compliance
  • Version 2.0: 2018-10-03
    Type: Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary