转录因子7样2 (HMG盒转录因子4) (T细胞特异性转录因子4) (T细胞因子4) (TCF-4) (hTCF-4)
转录因子7样2 (HMG盒转录因子4) (T细胞特异性转录因子4) (T细胞因子4) (TCF-4) (hTCF-4)
Q9NQB0功能描述
参与Wnt信号通路,并以序列特异性方式结合MYC启动子从而调节其表达。在缺乏CTNNB1时起阻遏蛋白作用,在其存在时则起激活蛋白作用。在CTNNB1存在下,激活具有多个Tcf基序5'-CCTTTGATC-3'拷贝的启动子的转录。TLE1、TLE2、TLE3和TLE4抑制由TCF7L2/TCF4和CTNNB1介导的反式激活。表达显性负性突变体导致细胞周期阻滞在G1期。对于维持小肠上皮干细胞区室是必需的。 {ECO:0000269|PubMed:12408868, ECO:0000269|PubMed:12727872, ECO:0000269|PubMed:19443654, ECO:0000269|PubMed:22699938, ECO:0000269|PubMed:9727977}。
组织特异性
Detected in epithelium from small intestine, with the highest expression at the top of the crypts and a gradient of expression from crypt to villus. Detected in colon epithelium and colon cancer, and in epithelium from mammary gland and carcinomas derived therefrom.
亚细胞定位
Nucleus, PML body
关键词