Biosynthesis of YM-216391 Unveils a Bifunctional α-Ketoglutarate-Dependent Enzyme Catalyzes Hydroxylation and Epimerization in RiPPs
The RiPP-modifying enzyme YmI is reported, a bifunctional Fe/αKGD that catalyzes Cβ-hydroxylation of Phe19 and Cα-epimerization of Ile20 on the precursor peptide YmA toward the formation of YM-216391, unveiling an unprecedented mechanism and novel bifunctionality, markedly expanding the reaction landscape for αKG-depen...