Recent finding on sucrose synthase research: not the only key for starch and cellulose synthesis.

Sucrose synthase (SUS), an enzyme that breaks down sucrose, is known to play an important role in the production of UDP-glucose and ADP-glucose. An established and highly debated theory holds that SUS is necessary for providing UDP-glucose and ADP-glucose for the biosynthesis of cellulose and starch, respectively. This article is focused on two recent reports which refuted the long-held theory that SUS is the sole regulator in cellulose and starch synthesis.