7XG5

Crystal structure of an (R)-selective omega-transaminase mutant from Aspergillus terreus with PLP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.76 Å
  • R-Value Free: 0.181 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.160 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

A growth selection system for the directed evolution of amine-forming or converting enzymes.

Wu, S.Xiang, C.Zhou, Y.Khan, M.S.H.Liu, W.Feiler, C.G.Wei, R.Weber, G.Hohne, M.Bornscheuer, U.T.

(2022) Nat Commun 13: 7458-7458

  • DOI: https://doi.org/10.1038/s41467-022-35228-y
  • Primary Citation of Related Structures:  
    7XG5, 7XG6

  • PubMed Abstract: 

    Fast screening of enzyme variants is crucial for tailoring biocatalysts for the asymmetric synthesis of non-natural chiral chemicals, such as amines. However, most existing screening methods either are limited by the throughput or require specialized equipment. Herein, we report a simple, high-throughput, low-equipment dependent, and generally applicable growth selection system for engineering amine-forming or converting enzymes and apply it to improve biocatalysts belonging to three different enzyme classes. This results in (i) an amine transaminase variant with 110-fold increased specific activity for the asymmetric synthesis of the chiral amine intermediate of Linagliptin; (ii) a 270-fold improved monoamine oxidase to prepare the chiral amine intermediate of Cinacalcet by deracemization; and (iii) an ammonia lyase variant with a 26-fold increased activity in the asymmetric synthesis of a non-natural amino acid. Our growth selection system is adaptable to different enzyme classes, varying levels of enzyme activities, and thus a flexible tool for various stages of an engineering campaign.


  • Organizational Affiliation

    Department of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, University of Greifswald, Felix Hausdorff-Str. 4, D-17489, Greifswald, Germany. shukewu@mail.hzau.edu.cn.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
omega-transaminase
A, B
322Aspergillus terreus NIH2624Mutation(s): 3 
Gene Names: ATEG_10023
UniProt
Find proteins for Q0C8G1 (Aspergillus terreus (strain NIH 2624 / FGSC A1156))
Explore Q0C8G1 
Go to UniProtKB:  Q0C8G1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ0C8G1
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.76 Å
  • R-Value Free: 0.181 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.160 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 106.405α = 90
b = 137.818β = 90
c = 117.424γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Chinese Academy of SciencesChina--

Revision History  (Full details and data files)

  • Version 1.0: 2022-12-14
    Type: Initial release
  • Version 1.1: 2023-11-29
    Changes: Data collection, Refinement description