Activity of each construct was determined . the basal promoter was located at about 60bp up stream of the transcription initiation site . it contains a tata box at - 33bp which is required for the transcription initiation 基因的基本启动子元件位于转录起始位点上游约60bp ，其中含有一个位于- 33bp处的tatabox ，它对于转录起始起着重要作用。
2.
The study of the structure and function of these promoters will help not only to comprehend the development of seeds and the mechanisms of gene expression and organic substance accumulation but also search for some promoter elements useful for plant genetic engineering 对这类启动子的结构和功能元件的了解，有助于人们更加深入地理解高等植物基因表达调控机制，提高人们对植物种子发育过程及有机物在种子中积累机制的认识，而且可以为植物基因工程中生物反应器的研究提供有应用价值的启动子元件。
