Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: September 8, 1997
Publication Date: N/A
Technical Abstract: The proteins in seeds of agronomically crops are important as nourishment for man and livestock, and for this reason have been studied extensively. This chapter describes features about glycinin and B-conglycinin, the proteins which comprise about 70% of the total protein in soybean. The proteins are encoded by two small families of genes that are expressed coordinately during seed development. During expression of these genes, the products of the genes enter the intracellular secretory pathway and undergo post-translational modification while enroute to their site of deposition in storage vacuoles. The modifications are required for efficient packaging within vacuoles. Genetic mutations are described which affect either the structure of storage protein subunits or steps in the maturation of the protein during transit of the secretory pathway. Strategies for the genetic manipulation of glycinin and B-conglycinin are discussed that may prove beneficial for improvement of their nutritional properties. The chapter will be of interest to scientists interested in crop improvement by the use of biotechnological approaches.