Functional AdoMet Isosteres Resistant to Classical AdoMet Degradation Pathways

Tyler D. Huber, Fengbin Wang, Shanteri Singh, Brooke R. Johnson, Jianjun Zhang, Manjula Sunkara, Steven G. Van Lanen, Andrew J. Morris, George N. Phillips, Jon S. Thorson

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

S-adenosyl-l-methionine (AdoMet) is an essential enzyme cosubstrate in fundamental biology with an expanding range of biocatalytic and therapeutic applications. We report the design, synthesis, and evaluation of stable, functional AdoMet isosteres that are resistant to the primary contributors to AdoMet degradation (depurination, intramolecular cyclization, and sulfonium epimerization). Corresponding biochemical and structural studies demonstrate the AdoMet surrogates to serve as competent enzyme cosubstrates and to bind a prototypical class I model methyltransferase (DnrK) in a manner nearly identical to AdoMet. Given this conservation in function and molecular recognition, the isosteres presented are anticipated to serve as useful surrogates in other AdoMet-dependent processes and may also be resistant to, and/or potentially even inhibit, other therapeutically relevant AdoMet-dependent metabolic transformations (such as the validated drug target AdoMet decarboxylase). This work also highlights the ability of the prototypical class I model methyltransferase DnrK to accept non-native surrogate acceptors as an enabling feature of a new high-throughput methyltransferase assay.

Original languageEnglish
Pages (from-to)2484-2491
Number of pages8
JournalACS Chemical Biology
Volume11
Issue number9
DOIs
StatePublished - Sep 16 2016

Bibliographical note

Publisher Copyright:
© 2016 American Chemical Society.

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Medicine

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