Mehmet Erguven, Nicolas V Cornelissen, Aileen Peters, Ezgi Karaca, Andrea Rentmeister
Chembiochem : a European journal of chemical biology 2022 Dec 16Methyltransferases (MTases) have become an important tool for site-specific alkylation and biomolecular labelling. In biocatalytic cascades with methionine adenosyltransferases (MATs), transfer of functional moieties has been realized starting from methionine analogues and ATP. However, the widespread use of S-adenosyl-l-methionine (AdoMet) and the abundance of MTases accepting sulfonium centre modifications limit selective modification in mixtures. AdoMet analogues with additional modifications at the nucleoside moiety bear potential for acceptance by specific MTases. Here, we explored the generation of double-modified AdoMets by an engineered Methanocaldococcus jannaschii MAT (PC-MjMAT), using 19 ATP analogues in combination with two methionine analogues. This substrate screening was extended to cascade reactions and to MTase competition assays. Our results show that MTase targeting selectivity can be improved by using bulky substituents at the N6 of adenine. The facile access to >10 new AdoMet analogues provides the groundwork for developing MAT-MTase cascades for orthogonal biomolecular labelling. © 2022 The Authors. ChemBioChem published by Wiley-VCH GmbH.
Mehmet Erguven, Nicolas V Cornelissen, Aileen Peters, Ezgi Karaca, Andrea Rentmeister. Enzymatic Generation of Double-Modified AdoMet Analogues and Their Application in Cascade Reactions with Different Methyltransferases. Chembiochem : a European journal of chemical biology. 2022 Dec 16;23(24):e202200511
PMID: 36288101
View Full Text