Human Polymerase-Associated Factor complex (PAFc) connects the Super Elongation Complex (SEC) to RNA polymerase II on chromatin

CORC > 厦门大学 > 海洋环境－已发表论文

	Human Polymerase-Associated Factor complex (PAFc) connects the Super Elongation Complex (SEC) to RNA polymerase II on chromatin
	He, Nanhai ; Chan, Caleb K. ; Sobhian, Bijan ; Chou, Seemay ; Xue, Yuhua ; Liu, Min ; Alber, Tom ; Benkirane, Monsef ; Zhou, Qiang ; Liu M(刘敏)
刊名	http://dx.doi.org/10.1073/pnas.1107107108
	2011-09-06
关键词	TRANSCRIPTION ELONGATION P-TEFB HIV-1 TAT MLL METHYLATION ACTIVATION GENOME FAMILY DOMAIN ENL
英文摘要	National Institutes of Health [R01AI41757, R01AI095057]; California HIV/AIDS Research Program [D09-B-301]; The Super Elongation Complex (SEC), containing transcription elongation activators/coactivators P-TEFb, ELL2, AFF4/1, ENL, and AF9, is recruited by HIV-1 Tat and mixed lineage leukemia (MLL) proteins to activate the expression of HIV-1 and MLL-target genes, respectively. In the absence of Tat and MLL, however, it is unclear how SEC is targeted to RNA polymerase (Pol) II to stimulate elongation in general. Furthermore, although ENL and AF9 can bind the H3K79 methyltransferase Dot1L, it is unclear whether these bindings are required for SEC-mediated transcription. Here, we show that the homologous ENL and AF9 exist in separate SECs with similar but nonidentical functions. ENL/AF9 contacts the scaffolding protein AFF4 that uses separate domains to recruit different subunits into SEC. ENL/AF9 also exists outside SEC when bound to Dot1L, which is found to inhibit SEC function. The YEATS domain of ENL/AF9 targets SEC to Pol II on chromatin through contacting the human Polymerase-Associated Factor complex (PAFc) complex. This finding explains the YEATS domain's dispensability for leukemogenesis when ENL/AF9 is translocated to MLL, whose interactions with PAFc and DNA likely substitute for the PAFc/chromatin-targeting function of the YEATS domain.
语种	英语
出版者	P NATL ACAD SCI USA
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/87809]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	He, Nanhai,Chan, Caleb K.,Sobhian, Bijan,et al. Human Polymerase-Associated Factor complex (PAFc) connects the Super Elongation Complex (SEC) to RNA polymerase II on chromatin[J]. http://dx.doi.org/10.1073/pnas.1107107108,2011.
APA	He, Nanhai.,Chan, Caleb K..,Sobhian, Bijan.,Chou, Seemay.,Xue, Yuhua.,...&刘敏.(2011).Human Polymerase-Associated Factor complex (PAFc) connects the Super Elongation Complex (SEC) to RNA polymerase II on chromatin.http://dx.doi.org/10.1073/pnas.1107107108.
MLA	He, Nanhai,et al."Human Polymerase-Associated Factor complex (PAFc) connects the Super Elongation Complex (SEC) to RNA polymerase II on chromatin".http://dx.doi.org/10.1073/pnas.1107107108 (2011).