The sequence includes expression of control elements whose high level of conservation can be seen, i. e. four TATA boxes and one CAAT box.
所得序列含有高度保守的基本表达调控元件，即一个CAAT框和四个TATA框。
2
Surprisingly, the factor turns out to have been previously characterized as a general repressor of transcription, NC2, an observation explained by its ability to repress TATA-box-containing promoters.
另人吃惊的是，这个因子证明是具有一般转录抑制因子nc2的明显的特征。
3
Multiprotein bridging factor 1 (MBF1) is a transcriptional co-activator mediating transcriptional activation by bridging between an activator and a TATA-box binding protein (TBP).