8FTR

SgvM methyltransferase with MTA and alpha-ketoleucine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.13 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.212 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.0 of the entry. See complete history


Literature

A biocatalytic platform for asymmetric alkylation of alpha-keto acids by mining and engineering of methyltransferases.

Ju, S.Kuzelka, K.P.Guo, R.Krohn-Hansen, B.Wu, J.Nair, S.K.Yang, Y.

(2023) Nat Commun 14: 5704-5704

  • DOI: https://doi.org/10.1038/s41467-023-40980-w
  • Primary Citation of Related Structures:  
    8FTR, 8FTS, 8FTV

  • PubMed Abstract: 

    Catalytic asymmetric α-alkylation of carbonyl compounds represents a long-standing challenge in synthetic organic chemistry. Herein, we advance a dual biocatalytic platform for the efficient asymmetric alkylation of α-keto acids. First, guided by our recently obtained crystal structures, we develop SgvM VAV as a general biocatalyst for the enantioselective methylation, ethylation, allylation and propargylation of a range of α-keto acids with total turnover numbers (TTNs) up to 4,600. Second, we mine a family of bacterial HMTs from Pseudomonas species sharing less than 50% sequence identities with known HMTs and evaluated their activities in SAM regeneration. Our best performing HMT from P. aeruginosa, PaHMT, displays the highest SAM regeneration efficiencies (TTN up to 7,700) among HMTs characterized to date. Together, the synergistic use of SgvM VAV and PaHMT affords a fully biocatalytic protocol for asymmetric methylation featuring a record turnover efficiency, providing a solution to the notorious problem of asymmetric alkylation.


  • Organizational Affiliation

    Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Methyltransferase339Streptomyces griseoviridisMutation(s): 0 
UniProt
Find proteins for R9UTR3 (Streptomyces griseoviridis)
Explore R9UTR3 
Go to UniProtKB:  R9UTR3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupR9UTR3
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.13 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.212 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.134α = 90
b = 67.134β = 90
c = 184.338γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Other private--

Revision History  (Full details and data files)

  • Version 1.0: 2023-11-01
    Type: Initial release