1LQ9

Crystal Structure of a Monooxygenase from the Gene ActVA-Orf6 of Streptomyces coelicolor Strain A3(2)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.168 
  • R-Value Work: 0.142 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The structure of ActVA-Orf6, a novel type of monooxygenase involved in actinorhodin biosynthesis

Sciara, G.Kendrew, S.G.Miele, A.E.Marsh, N.G.Federici, L.Malatesta, F.Schimperna, G.Savino, C.Vallone, B.

(2003) EMBO J 22: 205-215

  • DOI: 10.1093/emboj/cdg031
  • Primary Citation of Related Structures:  
    1N5V, 1N5T, 1N5S, 1N5Q, 1LQ9

  • PubMed Abstract: 
  • ActVA-Orf6 monooxygenase from Streptomyces coelicolor that catalyses the oxidation of an aromatic intermediate of the actinorhodin biosynthetic pathway is a member of a class of small monooxygenases that carry out oxygenation without the assistance o ...

    ActVA-Orf6 monooxygenase from Streptomyces coelicolor that catalyses the oxidation of an aromatic intermediate of the actinorhodin biosynthetic pathway is a member of a class of small monooxygenases that carry out oxygenation without the assistance of any of the prosthetic groups, metal ions or cofactors normally associated with activation of molecular oxygen. The overall structure is a ferredoxin-like fold with a novel dimeric assembly, indicating that the widely represented ferredoxin fold may sustain yet another functionality. The resolution (1.3 A) of the enzyme structure and its complex with substrate and product analogues allows us to visualize the mechanism of binding and activation of the substrate for attack by molecular oxygen, and utilization of two gates for the reaction components including a proton gate and an O(2)/H(2)O gate with a putative protein channel. This is the first crystal structure of an enzyme involved in the tailoring of a type II aromatic polyketide and illustrates some of the enzyme-substrate recognition features that may apply to a range of other enzymes involved in modifying a polyketide core structure.


    Related Citations: 
    • Crystallization and preliminary X-ray diffraction studies of a monooxygenase from Streptomyces coelicolor A3(2) involved in the biosynthesis of the polyketide actinorhodin
      Kendrew, S.G., Federici, L., Savino, C., Miele, A.E., Marsh, E.N.G., Vallone, B.
      (2000) Acta Crystallogr D Biol Crystallogr 56: 481
    • Identification of a monooxygenase from Streptomyces coelicolor A3(2) involved in biosynthesis of Actinorhodin: purification and characterization of the recombinant enzyme
      Kendrew, S.G., Hopwood, D.A., Marsh, E.N.G.
      (1997) J Bacteriol 179: 4305

    Organizational Affiliation

    Dipartimento di Scienze Biochimiche and CNR, Centro di Studi sulla Biologia Molecolare, Università di Roma 'La Sapienza', Piazzale A.Moro, 5, 00185 Roma, Italy.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ACTVA-ORF6 MONOOXYGENASEAB112Streptomyces coelicolor A3(2)Mutation(s): 0 
Gene Names: ActVA - Orf6
Find proteins for Q53908 (Streptomyces coelicolor)
Explore Q53908 
Go to UniProtKB:  Q53908
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PG4
Query on PG4

Download CCD File 
A
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.168 
  • R-Value Work: 0.142 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.028α = 90
b = 60.168β = 90
c = 71.379γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MLPHAREphasing
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-01-14
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Source and taxonomy, Version format compliance