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	KRAB-type zinc-finger protein Apak specifically regulates p53-dependent apoptosis
	Tian, Chunyan ; Xing, Guichun ; Xie, Ping ; Lu, Kefeng ; Nie, Jing ; Wang, Jian ; Li, Li ; Gao, Mei ; Zhang, Lingqiang ; He, Fuchu
	2010-10-12 ; 2010-10-12
关键词	DNA-DAMAGE ATAXIA-TELANGIECTASIA CELL-SURVIVAL P53 ACTIVITY IN-VIVO ATM ACTIVATION FAMILY GENES PATHWAY Cell Biology
中文摘要	Only a few p53 regulators have been shown to participate in the selective control of p53-mediated cell cycle arrest or apoptosis. How p53-mediated apoptosis is negatively regulated remains largely unclear. Here we report that Apak (ATM and p53-associated KZNF protein), a Kruppel-associated box (KRAB)-type zinc-finger protein, binds directly to p53 in unstressed cells, specifically downregulates pro-apoptotic genes, and suppresses p53-mediated apoptosis by recruiting KRAB-box-associated protein (KAP)-1 and histone deacetylase 1 (HDAC1) to attenuate the acetylation of p53. Apak inhibits p53 activity by interacting with ATM, a previously identified p53 activator. In response to stress, Apak is phosphorylated by ATM and dissociates from p53, resulting in activation of p53 and induction of apoptosis. These findings revealed Apak to be a negative regulator of p53-mediated apoptosis and showed the dual role of ATM in p53 regulation.
语种	英语 ; 英语
出版者	NATURE PUBLISHING GROUP ; LONDON ; MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/81767]
专题	清华大学
推荐引用方式 GB/T 7714	Tian, Chunyan,Xing, Guichun,Xie, Ping,et al. KRAB-type zinc-finger protein Apak specifically regulates p53-dependent apoptosis[J],2010, 2010.
APA	Tian, Chunyan.,Xing, Guichun.,Xie, Ping.,Lu, Kefeng.,Nie, Jing.,...&He, Fuchu.(2010).KRAB-type zinc-finger protein Apak specifically regulates p53-dependent apoptosis..
MLA	Tian, Chunyan,et al."KRAB-type zinc-finger protein Apak specifically regulates p53-dependent apoptosis".(2010).

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