CTCF

该基因属于boris+ctcf基因家族，编码一个具有11个高度保守的锌指结构域的转录调节蛋白。这种核蛋白能够利用zf结构域的不同组合来结合不同的dna靶序列和蛋白质。根据所述位点的上下文，所述蛋白质可结合包含组蛋白乙酰转移酶（hat）的复合物并作为转录激活剂发挥作用，或结合包含组蛋白脱乙酰基酶（hdac）的复合物并作为转录抑制因子发挥作用。如果蛋白质与转录绝缘体元件结合，它可以阻断增强子和上游启动子之间的通讯，从而调节印迹表达。这种基因突变与浸润性乳腺癌、前列腺癌和肾母细胞瘤有关。另外，已经发现该基因编码不同亚型的剪接转录变体。[由RefSeq提供，2010年7月]
This gene is a member of the BORIS + CTCF gene family and encodes a transcriptional regulator protein with 11 highly conserved zinc finger (ZF) domains. This nuclear protein is able to use different combinations of the ZF domains to bind different DNA target sequences and proteins. Depending upon the context of the site, the protein can bind a histone acetyltransferase (HAT)-containing complex and function as a transcriptional activator or bind a histone deacetylase (HDAC)-containing complex and function as a transcriptional repressor. If the protein is bound to a transcriptional insulator element, it can block communication between enhancers and upstream promoters, thereby regulating imprinted expression. Mutations in this gene have been associated with invasive breast cancers, prostate cancers, and Wilms' tumors. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2010]