8CLO

Zearalenone lactonase from Streptomyces coelicoflavus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.187 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Bacterial Lactonases ZenA with Noncanonical Structural Features Hydrolyze the Mycotoxin Zearalenone.

Fruhauf, S.Puhringer, D.Thamhesl, M.Fajtl, P.Kunz-Vekiru, E.Hobartner-Gussl, A.Schatzmayr, G.Adam, G.Damborsky, J.Djinovic-Carugo, K.Prokop, Z.Moll, W.D.

(2024) ACS Catal 14: 3392-3410

  • DOI: https://doi.org/10.1021/acscatal.4c00271
  • Primary Citation of Related Structures:  
    8CLN, 8CLO, 8CLP, 8CLQ, 8CLT, 8CLU, 8CLV

  • PubMed Abstract: 

    Zearalenone (ZEN) is a mycoestrogenic polyketide produced by Fusarium graminearum and other phytopathogenic members of the genus Fusarium . Contamination of cereals with ZEN is frequent, and hydrolytic detoxification with fungal lactonases has been explored. Here, we report the isolation of a bacterial strain, Rhodococcus erythropolis PFA D8-1, with ZEN hydrolyzing activity, cloning of the gene encoding α/β hydrolase ZenA encoded on the linear megaplasmid pSFRL1, and biochemical characterization of nine homologues. Furthermore, we report site-directed mutagenesis as well as structural analysis of the dimeric ZenA Re of R. erythropolis and the more thermostable, tetrameric ZenA Scfl of Streptomyces coelicoflavus with and without bound ligands. The X-ray crystal structures not only revealed canonical features of α/β hydrolases with a cap domain including a Ser-His-Asp catalytic triad but also unusual features including an uncommon oxyanion hole motif and a peripheral, short antiparallel β-sheet involved in tetramer interactions. Presteady-state kinetic analyses for ZenA Re and ZenA Scfl identified balanced rate-limiting steps of the reaction cycle, which can change depending on temperature. Some new bacterial ZEN lactonases have lower K M and higher k cat than the known fungal ZEN lactonases and may lend themselves to enzyme technology development for the degradation of ZEN in feed or food.


  • Organizational Affiliation

    dsm-firmenich Animal Nutrition and Health R&D Center Tulln, Technopark 1, Tulln 3430, Austria.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Hydrolase
A, B
315Streptomyces coelicoflavusMutation(s): 0 
Gene Names: SMCF_1294
UniProt
Find proteins for A0A6N9UBA7 (Streptomyces coelicoflavus)
Explore A0A6N9UBA7 
Go to UniProtKB:  A0A6N9UBA7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A6N9UBA7
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
EDO
Query on EDO

Download Ideal Coordinates CCD File 
C [auth A]
D [auth A]
E [auth A]
F [auth A]
G [auth A]
C [auth A],
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
I [auth B],
J [auth B],
K [auth B],
L [auth B],
M [auth B],
N [auth B]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.187 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 173.548α = 90
b = 69.297β = 96.06
c = 64.423γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata scaling
XDSdata reduction
CRANK2phasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Christian Doppler ForschungsgesellschaftAustriaFA743017
Austrian Research Promotion AgencyAustriaLaura Bassi Center for Optimised Structural Studies
Ministry of Education (MoE, Czech Republic)Czech RepublicINBIO - CZ.02.1.01/0.0/0.0/16_026/0008451
Ministry of Education (MoE, Czech Republic)Czech RepublicRECETOX RI LM2018121
Ministry of Education (MoE, Czech Republic)Czech RepublicELIXIR - LM201813

Revision History  (Full details and data files)

  • Version 1.0: 2024-02-21
    Type: Initial release
  • Version 1.1: 2024-03-20
    Changes: Database references