Enzymatic formation of 2AQs and curcuminoids.
A, 2-heptyl-4-quinolone formed by PqsB, -C, -D, and -E; B, 2-heptyl-N-methyl-4-quinolone (4) formed by HsPKS3; C, feruloyldiketide-CoA formed by ClDCS; D, curcumin formed by ClCURS1; E, decanoyldiketide-CoA (21) formed by ADS; F, 2-nonyl-N-methyl-4-quinolone (17) formed by AQS.