6GHW

Substituting the prolines of 4-oxalocrotonate tautomerase with non-canonical analogue (2S)-3,4-dehydroproline


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.288 
  • R-Value Observed: 0.290 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Substituting the catalytic proline of 4-oxalocrotonate tautomerase with non-canonical analogues reveals a finely tuned catalytic system.

Lukesch, M.S.Pavkov-Keller, T.Gruber, K.Zangger, K.Wiltschi, B.

(2019) Sci Rep 9: 2697-2697

  • DOI: https://doi.org/10.1038/s41598-019-39484-9
  • Primary Citation of Related Structures:  
    6GHW

  • PubMed Abstract: 

    The enzyme 4-oxalocrotonate tautomerase shows remarkable catalytic versatility due to the secondary amine of its N-terminal proline moiety. In this work, we incorporated a range of proline analogues into the enzyme and examined the effects on structure and activity. While the structure of the enzyme remained unperturbed, its promiscuous Michael-type activity was severely affected. This finding demonstrates how atomic changes in a biocatalytic system can abolish its activity. Our work provides a toolbox for successful generation of enzyme variants with non-canonical catalytic proline analogues.


  • Organizational Affiliation

    Graz University of Technology, Institute of Molecular Biotechnology, Petersgasse 14, 8010, Graz, Austria.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
2-hydroxymuconate tautomerase
A, B, C
62Pseudomonas putidaMutation(s): 0 
Gene Names: xylH
EC: 5.3.2.6
UniProt
Find proteins for Q01468 (Pseudomonas putida)
Explore Q01468 
Go to UniProtKB:  Q01468
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ01468
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download Ideal Coordinates CCD File 
D [auth C]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
8LJ
Query on 8LJ
A, B, C
L-PEPTIDE LINKINGC5 H7 N O2PRO
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.288 
  • R-Value Observed: 0.290 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.296α = 90
b = 85.296β = 90
c = 155.463γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Austrian Science FundAustria901

Revision History  (Full details and data files)

  • Version 1.0: 2019-03-06
    Type: Initial release
  • Version 1.1: 2019-04-24
    Changes: Data collection, Database references