Abstract
Prenyltransferases of the dimethylallyltryptophan synthase (DMATS) superfamily are involved in the biosynthesis of secondary metabolites and contribute as modification enzymes significantly to structural diversity of natural products. They show usually broad specificity toward their aromatic substrates with regiospecific prenylations on aromatic rings. However, most members of this superfamily exhibit a high specificity toward their prenyl donors and usually accept exclusively dimethylallyl diphosphate (DMAPP). Recently, several indole prenyltransferases from this family were also demonstrated to accept unnatural DMAPP analogs such as methylallyl, 2-pentenyl and benzyl diphosphate for alkylation, or benzylation of the indole ring. Partial or complete shift of the substitution position was observed for these enzymes. In this study, we report the acceptance of these DMAPP analogs by two tyrosine O-prenyltransferases TyrPT from Aspergillus niger and SirD from Leptosphaeria maculans for alkylation or benzylation of tyrosine and derivatives. NMR and mass spectrometry (MS) analyses of nine isolated enzyme products confirmed the regiospecific O- or N-alkylation or benzylation at position C-4 of the aromatic ring, which is the same prenylation position of these enzymes in the presence of DMAPP.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.