Zhu Nan, Hansen Ulla
Department of Biology, Boston University, 5 Cummington Street, Boston, MA 02215, USA.
Biochim Biophys Acta. 2010 Jan-Feb;1799(1-2):74-9. doi: 10.1016/j.bbagrm.2009.11.006.
High mobility group nucleosomal proteins (HMGNs) are small non-histone proteins associated with chromatin. HMGNs have the unique ability to bind to nucleosomes with higher affinity than to naked DNA [1]. They have been studied extensively for their ability to modulate transcription. Although initially viewed as general transcriptional activators on chromatin templates, it is now appreciated that they are instead highly specific modulators of gene expression. We review the mechanisms for targeting HMGNs to specific genes and for how they subsequently regulate transcription.
高迁移率族核小体蛋白(HMGNs)是与染色质相关的小型非组蛋白。HMGNs具有独特的能力,与核小体结合的亲和力高于与裸露DNA的结合亲和力[1]。它们因其调节转录的能力而受到广泛研究。尽管最初被视为染色质模板上的一般转录激活因子,但现在人们认识到它们实际上是基因表达的高度特异性调节因子。我们综述了HMGNs靶向特定基因的机制以及它们随后如何调节转录。