Gene for Amylose Synthesis IdentifiedMarch 11, 2015
Starch is one of the important products in photosynthesis. It is also used in textile and paper industries. Despite its various uses, its formation is yet to be understood. Hence, a group of researchers from ETH Zurich conducted a study to understand how starch is produced.
The researchers examined the photosynthesis process, specifically the amylose formation taking place in Arabidopsis thaliana. The only known enzyme necessary for amylose formation is granular-bound starch synthase (GBSS).
Their findings have led to the discovery of Protein Targeting to Starch (PTST), a vital molecule in amylose synthesis. Further tests on mutant A. thaliana without PTST resulted in the absence of amylase while the GBSS was hardly detectable. This result suggests that PTST functions in transporting GBSS to the starch granules and makes GBSS more stable.
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