BATS

Date/Time:

Apr 8, 2022 - 12:00 PM

Location:

Hosts:

Bevin Engelward

Speaker:

Title:

A Dynamics-based Approach Toward Redesigning a Natural Enzyme

Abstract:

Enzymes represent some of the most efficient and precise catalysts in the world, with applications ranging from therapeutics to manufacturing. However, our limited ability to rationally tune and tailor enzyme activity to specific substrates has restricted their applicability, efficiency, and cost effectiveness. Here, we present computational methods that illuminate enzyme catalysis with atomistic detail, providing new insights that we leverage to guide enzyme redesign.

Speaker:

Title:

Exploring the Evolutionary Origins of Acutumine Biosynthesis in Menispermaceae Plants

Abstract:

Acutumine alkaloids are rare halogenated natural products produced in Menispermum plants with medicinal interest, yet their biosynthesis remains underexplored. Here, we report the discovery of dechloroacutumine halogenase (DAH) and examine its evolutionary origins. Synteny-based analyses of M. canadense genome indicate gene duplication and neofunctionalization of flavonol synthase gene in DAH evolution. This catalytic switch exemplifies the diversification of alkaloid biosynthesis in plants. Inspired by the evolution of DAH, we explore mechanism-based engineering of plant Fe(II)- and 2-oxoglutarate-dependent dioxygenases.