Biosynthesis of angelyl-CoA in Saccharomyces cerevisiae
Abstract
The angelic acid moiety represents an essential modification in many biologically active products. These products are commonly known as angelates and several studies have demonstrated their therapeutic benefits, including anti-inflammatory and anti-cancer effects. However, their availability for use in the development of therapeutics is limited due to poor extraction yields. Chemical synthesis has been achieved but its complexity prevents application, therefore microbial production may offer a promising alternative. Here, we engineered the budding yeast Saccharomyces cerevisiae to produce angelyl-CoA, the CoA-activated form of angelic acid. For yeast-based production of angelyl-CoA we first expressed genes recently identified in the biosynthetic cluster ssf of Streptomyces sp. SF2575 in S. cerevisiae. Exogenous feeding of propionate and heterologous expression of a propionyl-CoA synthase from Streptomyces sp. were initially employed to increase the intracellular propionyl-CoA level, resulting in production of angelyl-CoA in the order of 5 mg/L. Substituting the Streptomyces sp. propionyl-CoA carboxylase with a carboxylase derived from Streptomyces coelicolor resulted in angelyl-CoA levels up to 6.4 mg/L. In vivo analysis allowe...Continue Reading
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