6WN3

Structure of the Rieske non-heme iron oxygenase SxtT


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.172 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis for divergent C-H hydroxylation selectivity in two Rieske oxygenases.

Lukowski, A.L.Liu, J.Bridwell-Rabb, J.Narayan, A.R.H.

(2020) Nat Commun 11: 2991-2991

  • DOI: 10.1038/s41467-020-16729-0
  • Primary Citation of Related Structures:  
    6WN3, 6WNB, 6WNC, 6WND

  • PubMed Abstract: 
  • Biocatalysts that perform C-H hydroxylation exhibit exceptional substrate specificity and site-selectivity, often through the use of high valent oxidants to activate these inert bonds. Rieske oxygenases are examples of enzymes with the ability to perform precise mono- or dioxygenation reactions on a variety of substrates ...

    Biocatalysts that perform C-H hydroxylation exhibit exceptional substrate specificity and site-selectivity, often through the use of high valent oxidants to activate these inert bonds. Rieske oxygenases are examples of enzymes with the ability to perform precise mono- or dioxygenation reactions on a variety of substrates. Understanding the structural features of Rieske oxygenases responsible for control over selectivity is essential to enable the development of this class of enzymes for biocatalytic applications. Decades of research has illuminated the critical features common to Rieske oxygenases, however, structural information for enzymes that functionalize diverse scaffolds is limited. Here, we report the structures of two Rieske monooxygenases involved in the biosynthesis of paralytic shellfish toxins (PSTs), SxtT and GxtA, adding to the short list of structurally characterized Rieske oxygenases. Based on these structures, substrate-bound structures, and mutagenesis experiments, we implicate specific residues in substrate positioning and the divergent reaction selectivity observed in these two enzymes.


    Organizational Affiliation

    Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA. arhardin@umich.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SxtTA, B, C334Microseira wolleiMutation(s): 0 
Gene Names: sxtT
UniProt
Find proteins for C3RVQ0 (Microseira wollei)
Explore C3RVQ0 
Go to UniProtKB:  C3RVQ0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupC3RVQ0
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FES (Subject of Investigation/LOI)
Query on FES

Download Ideal Coordinates CCD File 
D [auth A],
O [auth B],
X [auth C]
FE2/S2 (INORGANIC) CLUSTER
Fe2 S2
NIXDOXVAJZFRNF-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
BA [auth C],
CA [auth C],
DA [auth C],
J [auth A],
K [auth A],
BA [auth C],
CA [auth C],
DA [auth C],
J [auth A],
K [auth A],
L [auth A],
M [auth A],
N [auth A],
T [auth B],
U [auth B],
V [auth B],
W [auth B]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
E [auth A],
F [auth A],
G [auth A],
H [auth A],
P [auth B],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
P [auth B],
Q [auth B],
R [auth B],
Y [auth C],
Z [auth C]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
FE (Subject of Investigation/LOI)
Query on FE

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.172 
  • Space Group: C 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 152.276α = 90
b = 159.577β = 90
c = 115.979γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-06-17
    Type: Initial release
  • Version 1.1: 2020-06-24
    Changes: Database references