2FE6

P450CAM from Pseudomonas putida reconstituted with manganic protoporphyrin IX

• PDB DOI: https://doi.org/10.2210/pdb2FE6/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Pseudomonas putida
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-12-15 Released: 2006-03-14 
• Deposition Author(s): von Koenig, K., Makris, T.M., Sligar, S.G., Schlichting, I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.249 
• R-Value Work: 0.227 
• R-Value Observed: 0.236 

Starting Model: experimental

Literature

The status of high-valent metal oxo complexes in the P450 cytochromes.

Makris, T.M., Koenig, K., Schlichting, I., Sligar, S.G.

(2006) J Inorg Biochem 100: 507-518

• PubMed: 16510191 
• DOI: https://doi.org/10.1016/j.jinorgbio.2006.01.025
• Primary Citation of Related Structures:  
  2FE6, 2FER, 2FEU


• PubMed Abstract: 
  

  The oxidative prowess of the P450 cytochromes in physiological reactions is attributed to the production of a high-valent iron-oxo complex, or Compound I intermediate, in the reaction cycle. Despite many years of study, however, the full electronic description of this fleeting intermediate still remains an active area of study. In this manuscript, the current status of the isolation and characterization of the P450 oxo-Fe(IV) is examined and compared to analogous states in related heme enzymes. In addition, the utilization of cofactor exchange to stabilize high-valent oxo-states in the P450 is addressed. Structural and spectroscopic studies on manganese reconstituted P450, and its corresponding oxo-complex, are presented.

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Organizational Affiliation: 

Department of Biochemistry, University of Illinois Urbana-Champaign, 116 Morrill Hall, Urbana, IL 61801, USA. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 48.2 kDa 
• Atom Count: 3,681 
• Modelled Residue Count: 405 
• Deposited Residue Count: 421 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cytochrome P450-cam	A	421	Pseudomonas putida	Mutation(s): 0  Gene Names: camC, cyp101 EC: 1.14.15.1
UniProt
Find proteins for P00183 (Pseudomonas putida) Explore P00183  Go to UniProtKB:  P00183

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MNR	C [auth A]	PROTOPORPHYRIN IX CONTAINING MN C34 H32 Mn N4 O4 UAPHVASSHGRKEN-RGGAHWMASA-L
K	B [auth A]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.249 
• R-Value Work: 0.227 
• R-Value Observed: 0.236 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 64.39	α = 90
b = 64.39	β = 90
c = 252.73	γ = 90

Software Package:

Software Name	Purpose
XSCALE	data scaling
CNS	refinement
PDB_EXTRACT	data extraction
MAR345	data collection
XDS	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-03-14 
Deposition Author(s): von Koenig, K., Makris, T.M., Sligar, S.G., Schlichting, I.

Revision History  

• Version 1.0: 2006-03-14
  Type: Initial release
  
• Version 1.1: 2007-10-16
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-10-18
  Changes: Refinement description
• Version 1.4: 2023-08-30
  Changes: Data collection, Database references, Derived calculations, Refinement description