Mustering a Milder Mustard (IMAGE) Washington University in St. Louis Caption Indian mustard, like these yellow flowered plants, is an important agricultural crop in many parts of the world. It is also a Brassica plant that shares a bitter taste with other cruciferous plants like broccoli and cabbage. Researchers from three continents -- including biologists from Washington University in St. Louis -- have mapped the crystal structure of a key protein that makes the metabolites responsible for the bitter taste in Brassicas. Credit Soon Goo Lee Usage Restrictions For editorial purposes License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.