The work demonstrates that it is feasible to enhance vitamin B6 content in seeds, the researchers say. Vitamin B6 is essential for all cellular organisms and is particularly renowned in the medical field as being involved in more bodily functions than any other single nutrient, according to the article. Two vitamin B6 biosynthetic enzymes, PDX1 and PDX2, have been identified recently, and the article says their discovery has made it possible to regulate B6 production.
The "metabolically engineered" GM plants that were developed at the Danforth Center "overexpress" one or both of these two enzymes. The research results are said to be particularly applicable for crop plants whose seeds are the major source of food or feed. The article can be viewed online at the link below.
Enhancement of Vitamin B6 Levels in Seeds through Metabolic Engineering
News Aug 20, 2009
In photosynthesis, solar energy is converted into chemical energy, which is then used in nature to produce organic molecules from carbon dioxide. In plants, algae and cyanobacteria, the key photosynthesis reactions take place in two complex structures known as photosystems. These are located in a special membrane system, the thylakoids. Many details of their molecular structure and the way the proteins are incorporated into the membranes have yet to be explored - until now.READ MORE