1.14.99.52 synthesis potential application of the oxidative coupling between hercynine and cysteine for industrial ergothioneine production -, 734828 1.14.99.52 synthesis the ergothioneine biosynthetic pathway (EgtA-EgtE catalysis) provides an opportunity for ergothioneine production through metabolic engineering, but the kinetic properties and the presence of side-reaction render OvoA not suitable for use in ergothioneine production through metabolic engineering 743388