Modification of Proteins Encoded by Seed Storage Protein Genes
It has been recognized for many years that seed proteins are deficient in amino acids that are “essential” for human and livestock nutrition (15). In general, cereals are most limiting in lysine while legumes are most limiting in the sulfur amino acids, methionine and cysteine. There has been only limited progress by plant breeders to increase the content of these amino acids in crops, primarily because genes encoding storage proteins with higher levels of essential amino acids do not normally exist. Therefore, genetic engineering of genes encoding seed storage proteins would provide a rather straightforward solution to the problem. But regardless of how straightforward the genetic engineering approach might be, it remains to be seen whether it will be practical.
KeywordsStorage Protein Seed Protein Protein Body Seed Storage Protein Storage Protein Gene
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