4WWJ

UndA, an oxygen-activating, non-heme iron dependent desaturase/decarboxylase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.145 
  • R-Value Observed: 0.147 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Microbial biosynthesis of medium-chain 1-alkenes by a nonheme iron oxidase.

Rui, Z.Li, X.Zhu, X.Liu, J.Domigan, B.Barr, I.Cate, J.H.Zhang, W.

(2014) Proc Natl Acad Sci U S A 111: 18237-18242

  • DOI: https://doi.org/10.1073/pnas.1419701112
  • Primary Citation of Related Structures:  
    4WWJ, 4WWZ, 4WX0

  • PubMed Abstract: 

    Aliphatic medium-chain 1-alkenes (MCAEs, ∼10 carbons) are "drop-in" compatible next-generation fuels and precursors to commodity chemicals. Mass production of MCAEs from renewable resources holds promise for mitigating dependence on fossil hydrocarbons. An MCAE, such as 1-undecene, is naturally produced by Pseudomonas as a semivolatile metabolite through an unknown biosynthetic pathway. We describe here the discovery of a single gene conserved in Pseudomonas responsible for 1-undecene biosynthesis. The encoded enzyme is able to convert medium-chain fatty acids (C10-C14) into their corresponding terminal olefins using an oxygen-activating, nonheme iron-dependent mechanism. Both biochemical and X-ray crystal structural analyses suggest an unusual mechanism of β-hydrogen abstraction during fatty acid substrate activation. Our discovery unveils previously unidentified chemistry in the nonheme Fe(II) enzyme family, provides an opportunity to explore the biology of 1-undecene in Pseudomonas, and paves the way for tailored bioconversion of renewable raw materials to MCAE-based biofuels and chemical commodities.


  • Organizational Affiliation

    Energy Biosciences Institute, Departments of Chemical and Biomolecular Engineering.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
TENA/THI-4 family protein
A, B
263Pseudomonas protegens Pf-5Mutation(s): 0 
Gene Names: PFL_4321
EC: 1
UniProt
Find proteins for Q4K8M0 (Pseudomonas fluorescens (strain ATCC BAA-477 / NRRL B-23932 / Pf-5))
Explore Q4K8M0 
Go to UniProtKB:  Q4K8M0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ4K8M0
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
H [auth A]
I [auth A]
J [auth A]
K [auth A]
Q [auth B]
H [auth A],
I [auth A],
J [auth A],
K [auth A],
Q [auth B],
R [auth B],
S [auth B],
T [auth B],
U [auth B]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
D [auth A]
E [auth A]
F [auth A]
G [auth A]
M [auth B]
D [auth A],
E [auth A],
F [auth A],
G [auth A],
M [auth B],
N [auth B],
O [auth B],
P [auth B]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
FE
Query on FE

Download Ideal Coordinates CCD File 
C [auth A],
L [auth B]
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.145 
  • R-Value Observed: 0.147 
  • Space Group: C 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 141.38α = 90
b = 218.44β = 90
c = 67.31γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-12-24
    Type: Initial release
  • Version 1.1: 2015-01-07
    Changes: Database references
  • Version 1.2: 2023-09-27
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description, Source and taxonomy, Structure summary