Production of rosmarinic acid with ATP and CoA double regenerating system

Rosmarinic acid (RA), as a hydroxycinnamic acid ester of caffeic acid (CA) and 3,4-dihydroxyphenyllactic acid (3,4-DHPL), is a phenylpropanoid-derived plant natural product and has diverse biological activities. This work acts as a modular platform for microbial production using a two-cofactor (ATP and CoA) regeneration system to product RA based on a cell-free biosynthetic approach. Optimal activity of the reaction system was pH 8 and 30 degrees C. Total turnover number for ATP and CoA was 820.60 +/- 28.60 and 444.50 +/- 9.65, respectively. Based on the first hour data, the RA productivity reached 320.04 mg L-1 h(-1) (0.889 mM L-1 h(-1)).