Versatile Chemo-Biocatalytic Cascade Driven by a Thermophilic and Irreversible C-C Bond-Forming alpha-Oxoamine Synthase.
Ashley, B., Basle, A., Sajjad, M., El Ashram, A., Kelis, P., Marles-Wright, J., Campopiano, D.J.(2023) ACS Sustain Chem Eng 11: 7997-8002
- PubMed: 37266354 
- DOI: https://doi.org/10.1021/acssuschemeng.3c00243
- Primary Citation of Related Structures:  
7POA, 7POB, 7POC - PubMed Abstract: 
We report a chemo-biocatalytic cascade for the synthesis of substituted pyrroles, driven by the action of an irreversible, thermostable, pyridoxal 5'-phosphate (PLP)-dependent, C-C bond-forming biocatalyst ( Th AOS). The Th AOS catalyzes the Claisen-like condensation between various amino acids and acyl-CoA substrates to generate a range of α-aminoketones. These products are reacted with β-keto esters in an irreversible Knorr pyrrole reaction. The determination of the 1.6 Å resolution crystal structure of the PLP-bound form of Th AOS lays the foundation for future engineering and directed evolution. This report establishes the AOS family as useful and versatile C-C bond-forming biocatalysts.
Organizational Affiliation: 
School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom.