4L40

Structure of the P450 OleT with a C20 fatty acid substrate bound


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and Biochemical Properties of the Alkene Producing Cytochrome P450 OleTJE (CYP152L1) from the Jeotgalicoccus sp. 8456 Bacterium.

Belcher, J.McLean, K.J.Matthews, S.Woodward, L.S.Fisher, K.Rigby, S.E.Nelson, D.R.Potts, D.Baynham, M.T.Parker, D.A.Leys, D.Munro, A.W.

(2014) J.Biol.Chem. 289: 6535-6550

  • DOI: 10.1074/jbc.M113.527325
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The production of hydrocarbons in nature has been documented for only a limited set of organisms, with many of the molecular components underpinning these processes only recently identified. There is an obvious scope for application of these catalyst ...

    The production of hydrocarbons in nature has been documented for only a limited set of organisms, with many of the molecular components underpinning these processes only recently identified. There is an obvious scope for application of these catalysts and engineered variants thereof in the future production of biofuels. Here we present biochemical characterization and crystal structures of a cytochrome P450 fatty acid peroxygenase: the terminal alkene forming OleTJE (CYP152L1) from Jeotgalicoccus sp. 8456. OleTJE is stabilized at high ionic strength, but aggregation and precipitation of OleTJE in low salt buffer can be turned to advantage for purification, because resolubilized OleTJE is fully active and extensively dissociated from lipids. OleTJE binds avidly to a range of long chain fatty acids, and structures of both ligand-free and arachidic acid-bound OleTJE reveal that the P450 active site is preformed for fatty acid binding. OleTJE heme iron has an unusually positive redox potential (-103 mV versus normal hydrogen electrode), which is not significantly affected by substrate binding, despite extensive conversion of the heme iron to a high spin ferric state. Terminal alkenes are produced from a range of saturated fatty acids (C12-C20), and stopped-flow spectroscopy indicates a rapid reaction between peroxide and fatty acid-bound OleTJE (167 s(-1) at 200 μm H2O2). Surprisingly, the active site is highly similar in structure to the related P450BSβ, which catalyzes hydroxylation of fatty acids as opposed to decarboxylation. Our data provide new insights into structural and mechanistic properties of a robust P450 with potential industrial applications.


    Organizational Affiliation

    From the Manchester Institute of Biotechnology, Faculty of Life Sciences, University of Manchester, Manchester M1 7DN, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Terminal olefin-forming fatty acid decarboxylase
A
422Jeotgalicoccus sp. ATCC 8456Mutation(s): 0 
Find proteins for E9NSU2 (Jeotgalicoccus sp. ATCC 8456)
Go to UniProtKB:  E9NSU2
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
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
DCR
Query on DCR

Download SDF File 
Download CCD File 
A
icosanoic acid
C20 H40 O2
VKOBVWXKNCXXDE-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
DCRKd: 290 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.195 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 59.630α = 90.00
b = 59.630β = 90.00
c = 244.170γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
ADSCdata collection
XDSdata scaling
PHASERphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2013-06-07 
  • Released Date: 2013-11-27 
  • Deposition Author(s): Leys, D.

Revision History 

  • Version 1.0: 2013-11-27
    Type: Initial release
  • Version 1.1: 2014-03-05
    Type: Database references
  • Version 1.2: 2014-05-14
    Type: Database references