3FWF

Ferric camphor bound cytochrome P450cam containing a Selenocysteine as the 5th heme ligand, monoclinic crystal form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.83 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.164 

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Ligand Structure Quality Assessment 


This is version 1.5 of the entry. See complete history


Literature

Probing the role of the proximal heme ligand in cytochrome P450cam by recombinant incorporation of selenocysteine.

Aldag, C.Gromov, I.A.Garcia-Rubio, I.von Koenig, K.Schlichting, I.Jaun, B.Hilvert, D.

(2009) Proc Natl Acad Sci U S A 106: 5481-5486

  • DOI: https://doi.org/10.1073/pnas.0810503106
  • Primary Citation of Related Structures:  
    3FWF, 3FWG, 3FWI, 3FWJ

  • PubMed Abstract: 

    The unique monooxygenase activity of cytochrome P450cam has been attributed to coordination of a cysteine thiolate to the heme cofactor. To investigate this interaction, we replaced cysteine with the more electron-donating selenocysteine. Good yields of the selenoenzyme were obtained by bacterial expression of an engineered gene containing the requisite UGA codon for selenocysteine and a simplified yet functional selenocysteine insertion sequence (SECIS). The sulfur-to-selenium substitution subtly modulates the structural, electronic, and catalytic properties of the enzyme. Catalytic activity decreases only 2-fold, whereas substrate oxidation becomes partially uncoupled from electron transfer, implying a more complex role for the axial ligand than generally assumed.


  • Organizational Affiliation

    Laboratory of Organic Chemistry, ETH Zurich, CH-8093 Zurich, Switzerland.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Camphor 5-monooxygenase
A, B
405Pseudomonas putidaMutation(s): 3 
Gene Names: camCcyp101
EC: 1.14.15.1
UniProt
Find proteins for P00183 (Pseudomonas putida)
Explore P00183 
Go to UniProtKB:  P00183
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00183
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download Ideal Coordinates CCD File 
C [auth A],
G [auth B]
PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
CAM
Query on CAM

Download Ideal Coordinates CCD File 
D [auth A],
H [auth B]
CAMPHOR
C10 H16 O
DSSYKIVIOFKYAU-XCBNKYQSSA-N
K
Query on K

Download Ideal Coordinates CCD File 
E [auth A],
F [auth B],
I [auth B],
J [auth B]
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.83 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.162 
  • R-Value Observed: 0.164 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.52α = 90
b = 61.93β = 90.8
c = 94.46γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
MAR345data collection
XDSdata reduction

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-03-03
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2014-04-09
    Changes: Other
  • Version 1.3: 2014-08-06
    Changes: Other
  • Version 1.4: 2017-11-01
    Changes: Refinement description
  • Version 1.5: 2024-02-21
    Changes: Data collection, Database references, Derived calculations