Identification of potential binding sites for the FHA domain of human Chk2 by in vitro binding studies.

Identification of potential binding sites for the FHA domain of human Chk2 by in vitro binding studies.
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通过体外结合研究鉴定人 Chk2 FHA 结构域的潜在结合位点。

DOI:
10.1016/j.bbrc.2003.10.076
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发表时间:
2003
影响因子:
3.1
通讯作者:
Tsai,Ming-Daw
Tsai,Ming-Daw
中科院分区:
生物学4区
文献类型:
--
作者:
Qin,Dongyan;Lee,Hyun;Yuan,Chunhua;Ju,Yong;Tsai,Ming-Daw

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人Chk2是新近发现的一种肿瘤抑制蛋白,参与DNA损伤后的信号转导。该蛋白由一个叉头相关结构域(FHA)和一个激活域组成。确定Chk2FHA结构域的结合伙伴对于了解Chk2在信号转导中的作用非常重要。我们报告了一种方法的发展,涉及使用组合文库,下拉分析,表面等离子体共振(SPR)和核磁共振(核磁共振)方法来确定可能的候选Chk2FHA的结合位点。该方法已被用于确定P53的Thr329和乳腺癌1型易感蛋白(BRCA1)的Thr1852为Chk2FHA非常可能的生物结合部位。这些结果为进一步的涉及Chk2蛋白FHA结构域的细胞信号的生物学分析提供了有用的线索。
Human Chk2 is a newly identified tumor suppressor protein involved in signaling pathways in response to DNA damage. The protein consists of a forkhead-associated (FHA) domain and a kinase domain. Identification of binding partners of the Chk2FHA domain is important in understanding the roles of Chk2 in signaling. We report development of an approach involving the use of combinatorial libraries, pull-down assays, surface plasmon resonance (SPR), and nuclear magnetic resonance (NMR) methods to identify possible candidates for the binding sites of Chk2FHA. The approach has been used to identify Thr329 of p53 and Thr1852 of breast cancer type 1 susceptibility protein (BRCA1) as very likely biological binding sites of Chk2FHA. The results provide useful leads for further biological analyses of cell signaling involving the FHA domain of Chk2 protein.
正常眼和青光眼眼睫状肌尖端之间“斑块物质”的定量分析。
DOI: 10.1016/0014-4835(86)90005-9
发表时间: 1986
影响因子: 3.4
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