6RZ2

SalL with Chloroadenosine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.77 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.172 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

S-Adenosyl Methionine Cofactor Modifications Enhance the Biocatalytic Repertoire of Small Molecule C-Alkylation.

McKean, I.J.W.Sadler, J.C.Cuetos, A.Frese, A.Humphreys, L.D.Grogan, G.Hoskisson, P.A.Burley, G.A.

(2019) Angew Chem Int Ed Engl 58: 17583-17588

  • DOI: https://doi.org/10.1002/anie.201908681
  • Primary Citation of Related Structures:  
    6RYZ, 6RZ2

  • PubMed Abstract: 

    A tandem enzymatic strategy to enhance the scope of C-alkylation of small molecules via the in situ formation of S-adenosyl methionine (SAM) cofactor analogues is described. A solvent-exposed channel present in the SAM-forming enzyme SalL tolerates 5'-chloro-5'-deoxyadenosine (ClDA) analogues modified at the 2-position of the adenine nucleobase. Coupling SalL-catalyzed cofactor production with C-(m)ethyl transfer to coumarin substrates catalyzed by the methyltransferase (MTase) NovO forms C-(m)ethylated coumarins in superior yield and greater substrate scope relative to that obtained using cofactors lacking nucleobase modifications. Establishing the molecular determinants that influence C-alkylation provides the basis to develop a late-stage enzymatic platform for the preparation of high value small molecules.


  • Organizational Affiliation

    Department or Pure and Applied Chemistry, University of Strathclyde, 298 Cathedral Street, Glasgow, G1 1XL, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Adenosyl-chloride synthase
A, B, C
283Salinispora tropica CNB-440Mutation(s): 0 
Gene Names: salLStrop_1026
EC: 2.5.1.94
UniProt
Find proteins for A4X3Q0 (Salinispora tropica (strain ATCC BAA-916 / DSM 44818 / JCM 13857 / NBRC 105044 / CNB-440))
Explore A4X3Q0 
Go to UniProtKB:  A4X3Q0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA4X3Q0
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.77 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.172 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.842α = 90
b = 111.579β = 90
c = 165.565γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALAdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-04-15
    Type: Initial release
  • Version 1.1: 2024-01-24
    Changes: Data collection, Database references, Refinement description