2014/03/11 by Shanteri Singh, Jianjun Zhang, Tyler D. Huber +10 · 1 citation
Biochemistry, Genetics and Molecular Biology · #Cancer-related gene regulation #Biochemical and Molecular Research #Epigenetics and DNA Methylation
paper · doi:10.1002/anie.201308272
openalex publication_date 2014/03/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
A chemoenzymatic platform for the synthesis of S-adenosyl-L-methionine (SAM) analogues compatible with downstream SAM-utilizing enzymes is reported. Forty-four non-native S/Se-alkylated Met analogues were synthesized and applied to probing the substrate specificity of five diverse methionine adenosyltransferases (MATs). Human MAT II was among the most permissive of the MATs analyzed and enabled the chemoenzymatic synthesis of 29 non-native SAM analogues. As a proof of concept for the feasibility of natural product "alkylrandomization", a small set of differentially-alkylated indolocarbazole analogues was generated by using a coupled hMAT2-RebM system (RebM is the sugar C4'-O-methyltransferase that is involved in rebeccamycin biosynthesis). The ability to couple SAM synthesis and utilization in a single vessel circumvents issues associated with the rapid decomposition of SAM analogues and thereby opens the door for the further interrogation of a wide range of SAM utilizing enzymes.