6RX8

EDDS lyase variant D290M/Y320M with bound fumarate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.92 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Engineered C-N Lyase: Enantioselective Synthesis of Chiral Synthons for Artificial Dipeptide Sweeteners.

Zhang, J.Grandi, E.Fu, H.Saravanan, T.Bothof, L.Tepper, P.G.Thunnissen, A.W.H.Poelarends, G.J.

(2020) Angew.Chem.Int.Ed.Engl. 59: 429-435

  • DOI: 10.1002/anie.201910704
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Aspartic acid derivatives with branched N -alkyl or N -arylalkyl substituents are valuable precursors to artificial dipeptide sweeteners such as neotame and advantame, which have wide-ranging applications in the food industry. Despite the potential a ...

    Aspartic acid derivatives with branched N -alkyl or N -arylalkyl substituents are valuable precursors to artificial dipeptide sweeteners such as neotame and advantame, which have wide-ranging applications in the food industry. Despite the potential applications of these amino acid precursors to aspartame-based sweeteners, the development of a biocatalyst to synthesize these compounds in a single asymmetric step is an as yet unmet challenge. Herein we report an enantioselective biocatalytic synthesis of various difficult N -substituted aspartic acids including N -(3,3-dimethylbutyl)-L-aspartic acid and N -[3-(3-hydroxy-4-methoxyphenyl)propyl]-L-aspartic acid, precursors to neotame and advantame respectively, using an engineered variant of ethylenediamine- N , N '-disuccinic acid (EDDS) lyase from Chelativorans sp. BNC1. This engineered C-N lyase (mutant D290M/Y320M) displayed a remarkable 1140-fold increase in activity for the selective hydroamination of fumarate compared to that of the wild-type enzyme, which could be rationalized from the analysis of crystal structures. These results open up new opportunities to develop practical multienzymatic processes for the more sustainable and step-economic synthesis of an important class of food additives.


    Organizational Affiliation

    University of Groningen, Pharmaceutical Biology, Antonius Deusinglaan 1, 9713 AV, Groningen, NETHERLANDS.,NETHERLANDS.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Argininosuccinate lyase
A
508Chelativorans sp. (strain BNC1)Mutation(s): 2 
Find proteins for Q11KV9 (Chelativorans sp. (strain BNC1))
Go to UniProtKB:  Q11KV9
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
FUM
Query on FUM

Download SDF File 
Download CCD File 
A
FUMARIC ACID
C4 H4 O4
VZCYOOQTPOCHFL-OWOJBTEDSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.92 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.188 
  • Space Group: F 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 143.160α = 90.00
b = 144.230β = 90.00
c = 144.451γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
Aimlessdata scaling
XDSdata reduction
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Research CouncilNetherlands713483
Netherlands Organisation for Scientific ResearchNetherlands724.016.002

Revision History 

  • Version 1.0: 2019-10-30
    Type: Initial release
  • Version 1.1: 2019-11-27
    Type: Database references
  • Version 1.2: 2020-01-01
    Type: Database references