4RE0

Crystal structure of VmoLac in P622 space group


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.170 
  • R-Value Work: 0.140 
  • R-Value Observed: 0.141 

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Literature

Crystal structure of VmoLac, a tentative quorum quenching lactonase from the extremophilic crenarchaeon Vulcanisaeta moutnovskia.

Hiblot, J.Bzdrenga, J.Champion, C.Chabriere, E.Elias, M.

(2015) Sci Rep 5: 8372-8372

  • DOI: 10.1038/srep08372
  • Primary Citation of Related Structures:  
    4RDY, 4RDZ, 4RE0

  • PubMed Abstract: 
  • A new representative of the Phosphotriesterase-Like Lactonases (PLLs) family from the hyperthermophilic crenarchaeon Vulcanisaeta moutnovskia has been characterized and crystallized. VmoLac is a native, proficient lactonase with promiscuous, low phosphotriesterase activity ...

    A new representative of the Phosphotriesterase-Like Lactonases (PLLs) family from the hyperthermophilic crenarchaeon Vulcanisaeta moutnovskia has been characterized and crystallized. VmoLac is a native, proficient lactonase with promiscuous, low phosphotriesterase activity. VmoLac therefore represents an interesting candidate for engineering studies, with the aim of developing an efficient bacterial quorum-quenching agent. Here, we provide an extensive biochemical and kinetic characterization of VmoLac and describe the X-ray structures of the enzyme bound to a fatty acid and to its cognate substrate 3-oxo-C10 AHL (Acyl-Homoserine Lactone). The structures highlight possible structural determinants that may be involved in its extreme thermal stability (Tm = 128 °C). Moreover, the structure reveals that the substrate binding mode of VmoLac significantly differs from those of its close homologues, possibly explaining the substrate specificity of the enzyme. Finally, we describe the specific interactions between the enzyme and its substrate, and discuss the possible lactone hydrolysis mechanism of VmoLac.


    Organizational Affiliation

    University of Minnesota, Department of Biochemistry, Molecular Biology and Biophysics &Biotechnology Institute, St. Paul, MN 55108, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Parathion hydrolaseA316Vulcanisaeta moutnovskia 768-28Mutation(s): 0 
Gene Names: VMUT_2255
UniProt
Find proteins for F0QXN6 (Vulcanisaeta moutnovskia (strain 768-28))
Explore F0QXN6 
Go to UniProtKB:  F0QXN6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupF0QXN6
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
KCX
Query on KCX
A L-PEPTIDE LINKINGC7 H14 N2 O4LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.170 
  • R-Value Work: 0.140 
  • R-Value Observed: 0.141 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 134.67α = 90
b = 134.67β = 90
c = 126.4γ = 120
Software Package:
Software NamePurpose
MOLREPphasing
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: 2015-02-25
    Type: Initial release