3P3X

Crystal Structure of the Cytochrome P450 Monooxygenase AurH (nterm-AurH-I) from Streptomyces Thioluteus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.228 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Structural fine-tuning of a multifunctional cytochrome p450 monooxygenase.

Zocher, G.Richter, M.E.Mueller, U.Hertweck, C.

(2011) J Am Chem Soc 133: 2292-2302

  • DOI: https://doi.org/10.1021/ja110146z
  • Primary Citation of Related Structures:  
    3P3L, 3P3O, 3P3X, 3P3Z

  • PubMed Abstract: 

    AurH is a unique cytochrome P450 monooxygenase catalyzing the stepwise formation of a homochiral oxygen heterocycle, a key structural and pharmacophoric component of the antibiotic aureothin. The exceptional enzymatic reaction involves a tandem oxygenation process including a regio- and stereospecific hydroxylation, followed by heterocyclization. For the structural and biochemical basis of this unparalleled sequence, four crystal structures of AurH variants in different conformational states and in complex with the P450 inhibitor ancymidol were solved, which represent the first structures of the CYP151A group. Structural data in conjunction with computational docking, site-directed mutagenesis, and chemical analyses unveiled a switch function when recognizing the two substrates, deoxyaureothin and the hydroxylated intermediate, thus allowing the second oxygenation-heterocyclization step. Furthermore, we were able to modify the chemo- and regioselectivity of AurH, yielding mutants that catalyze the regioselective six-electron transfer of a nonactivated methyl group to a carboxylic acid via hydroxyl and aldehyde intermediates.


  • Organizational Affiliation

    Interfakultäres Institut für Biochemie, Eberhard Karls Universität Tübingen, Hoppe-Seyler-Str. 4, 72074 Tübingen, Germany. georg.zocher@uni-tuebingen.de


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cytochrome P450
A, B
416Streptomyces thioluteusMutation(s): 0 
Gene Names: aurH
UniProt
Find proteins for Q70KH6 (Streptomyces thioluteus)
Explore Q70KH6 
Go to UniProtKB:  Q70KH6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ70KH6
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 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
SO4
Query on SO4

Download Ideal Coordinates CCD File 
E [auth A]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
D [auth A],
H [auth B],
I [auth B]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
CL
Query on CL

Download Ideal Coordinates CCD File 
F [auth A],
J [auth B]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.228 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 129.33α = 90
b = 131.78β = 90
c = 53.23γ = 90
Software Package:
Software NamePurpose
MAR345dtbdata collection
PHASERphasing
REFMACrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-02-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2018-01-24
    Changes: Structure summary
  • Version 1.3: 2024-02-21
    Changes: Data collection, Database references, Derived calculations