1P2Y

CRYSTAL STRUCTURE OF CYTOCHROME P450CAM IN COMPLEX WITH (S)-(-)-NICOTINE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystallographic Studies on the Complex Behavior of Nicotine Binding to P450cam (CYP101)(dagger).

Strickler, M.Goldstein, B.M.Maxfield, K.Shireman, L.Kim, G.Matteson, D.Jones, J.P.

(2003) Biochemistry 42: 11943-11950

  • DOI: 10.1021/bi034833o
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Crystallographic and spectroscopic studies have been undertaken to characterize the binding behavior of the non-native substrate nicotine in the active site of the monooxygenase hemoprotein cytochrome P450cam. Despite the existence of a theoretical m ...

    Crystallographic and spectroscopic studies have been undertaken to characterize the binding behavior of the non-native substrate nicotine in the active site of the monooxygenase hemoprotein cytochrome P450cam. Despite the existence of a theoretical model that is consistent with the observed distribution of monooxygenation products, the crystal structure of the complex indicates that the primary binding mode of nicotine is unproductive. The structure is confirmed by spectral data that indicate direct coordination of substrate pyridine nitrogen with the heme iron. This would be the proper structure for evaluating binding affinity and inhibition. Reduction of the heme from Fe(III) to Fe(II) and introduction of carbon monoxide into crystals of the nicotine-P450cam complex, to simulate molecular oxygen binding, produces reorientation of the nicotine. This orientation is the appropriate one for predicting regioselectivity and the kinetic features of substrate oxidation. While it is not clear that such complicated behavior will be exhibited for other enzyme-substrate interactions, it is clear that a single crystal structure for a given substrate-enzyme interaction may not provide a good description of the binding mode responsible for product formation.


    Organizational Affiliation

    Department of Biophysics, University of Rochester, Rochester, New York 14627, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cytochrome P450-cam
A
420Pseudomonas putidaMutation(s): 0 
Gene Names: camC (cyp101)
EC: 1.14.15.1
Find proteins for P00183 (Pseudomonas putida)
Go to UniProtKB:  P00183
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NCT
Query on NCT

Download SDF File 
Download CCD File 
A
(S)-3-(1-METHYLPYRROLIDIN-2-YL)PYRIDINE
(S)-(-)-NICOTINE, 3-[(2S)-1-METHYL-2-PYRROLIDINYL] PYRIDINE
C10 H14 N2
SNICXCGAKADSCV-JTQLQIEISA-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: 2.3 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.223 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 64.050α = 90.00
b = 64.050β = 90.00
c = 251.060γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
X-PLORphasing
CNSrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-10-28
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance