They all contain similar sequences to the binding sites of transcriptional factors CAT,SP1,E2F,NFHB Oct 1 and ATF within several hundred base pairs upstream the transcriptional start sites.

• 在转录起始点的5'上游几百bp的范围内都有与CAT，SP1，E2F，NFHB，Oct1和ATF等转录因子的结合位点相似的核苷酸序列。