4L4F

Structure of cyanide and camphor bound P450cam mutant L358A/K178G/D182N


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.294 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Synergistic Effects of Mutations in Cytochrome P450cam Designed To Mimic CYP101D1.

Batabyal, D.Li, H.Poulos, T.L.

(2013) Biochemistry 52: 5396-5402

  • DOI: 10.1021/bi400676d
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • A close orthologue to cytochrome P450cam (CYP101A1) that catalyzes the same hydroxylation of camphor to 5-exo-hydroxycamphor is CYP101D1. There are potentially important differences in and around the active site that could contribute to subtle functi ...

    A close orthologue to cytochrome P450cam (CYP101A1) that catalyzes the same hydroxylation of camphor to 5-exo-hydroxycamphor is CYP101D1. There are potentially important differences in and around the active site that could contribute to subtle functional differences. Adjacent to the heme iron ligand, Cys357, is Leu358 in P450cam, whereas this residue is Ala in CYP101D1. Leu358 plays a role in binding of the P450cam redox partner, putidaredoxin (Pdx). On the opposite side of the heme, about 15-20 Å away, Asp251 in P450cam plays a critical role in a proton relay network required for O2 activation but forms strong ion pairs with Arg186 and Lys178. In CYP101D1 Gly replaces Lys178. Thus, the local electrostatic environment and ion pairing are substantially different in CYP101D1. These sites have been systematically mutated in P450cam to the corresponding residues in CYP101D1 and the mutants analyzed by crystallography, kinetics, and UV-vis spectroscopy. Individually, the mutants have little effect on activity or structure, but in combination there is a major drop in enzyme activity. This loss in activity is due to the mutants being locked in the low-spin state, which prevents electron transfer from the P450cam redox partner, Pdx. These studies illustrate the strong synergistic effects on well-separated parts of the structure in controlling the equilibrium between the open (low-spin) and closed (high-spin) conformational states.


    Organizational Affiliation

    Departments of Molecular Biology and Biochemistry, Chemistry, and Pharmaceutical Sciences, University of California, Irvine, CA 92697-3900, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Camphor 5-monooxygenase
A
415Pseudomonas putidaMutation(s): 4 
Gene Names: camC (cyp101)
EC: 1.14.15.1
Find proteins for P00183 (Pseudomonas putida)
Go to UniProtKB:  P00183
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K
Query on K

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A
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
CYN
Query on CYN

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A
CYANIDE ION
C N
XFXPMWWXUTWYJX-UHFFFAOYSA-N
 Ligand Interaction
CAM
Query on CAM

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Download CCD File 
A
CAMPHOR
C10 H16 O
DSSYKIVIOFKYAU-XCBNKYQSSA-N
 Ligand Interaction
HEM
Query on HEM

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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: 1.294 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.195 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 36.565α = 90.00
b = 103.413β = 90.00
c = 106.043γ = 90.00
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-07-31
    Type: Initial release
  • Version 1.1: 2013-08-28
    Type: Database references
  • Version 1.2: 2017-11-15
    Type: Refinement description