hPFTAIRE1 是一个 Cdc2 相关的 kinase 家庭成员。寻找它的底层和规章的蛋白质, hPFTAIRE1 被熔化到 LexA 并且用作一个诱饵屏蔽一个人的大脑 LexA 二混血儿的图书馆。在这屏蔽,包括 promyelocytic 白血病锌手指(PLZF ) ,七 hPFTAIRE1 交往蛋白质被获得。在 PLZF 和 hPFTAIRE1 之间的相互作用被贝它牛乳糖试金和列伊生长活动证实。PLZF 编码属于 POZ/BTB 领域和 Krupel 锌手指(POK ) 的一个抄写因素家庭。高度保存的 POZ/BTB 领域在蛋白质蛋白质相互作用起一个关键作用。分别地,我们删除了 POZ/BTB 和 Krupel 锌手指领域并且观察了在 hPFTAIRE1 之间的相互作用并且由液体贝它牛乳糖活动试金截断了 PLZF。一个弱相互作用在 hPFTAIRE1 和 PLZF 之间被检测。我们也观察了在 PLZF 和另一 Cdc2 相关的 kinase 之间的相互作用, PCTAIRE1。类似的结果被观察。在 PLZF 和 hPFTAIRE1 或 PCTAIRE1 之间的相互作用被 co-immunoprecipitation 试金在一个酵母系统证实。PLZF 是邻蛋白质并且在细胞生长期间起多重作用。我们的结果建议 hPFTAIRE1 和 PCTAIRE1 可以在 PLZF 的功能的规定起重要作用。
hPFTAIRE1 is a Cdc2-related kinase family member. To search its substrates and regulatory proteins, hPFTAIRE 1 was fused to LexA and used as a bait to screen a human brain LexA two-hybrid library. In this screening, seven hPFTAIRE 1 interacting proteins, including promyelocytic leukemia zinc finger (PLZF), were obtained. The interaction between PLZF and hPFTAIRE 1 was confirmed by β-galactosidase assay and Leu growth activity. PLZF encodes a transcription factor belonging to the POZ/BTB domain and Krtippel zinc finger (POK) family. The highly conserved POZ/BTB domain plays a critical role in protein-protein interaction. We deleted the POZ/BTB and Krtippel zinc finger domains, respectively, and observed the interaction between hPFTAIRE1 and truncated PLZFs by liquid β-galactosidase activity assay. A weak interaction was detected between hPFTAIREI and PLZF. We also observed the interaction between PLZF and another Cdc2-related kinase, PCTAIRE1. A similar result was observed. The interaction between PLZF and hPFTAIRE1 or PCTAIRE1 was confirmed by co-immunoprecipitation assay in a yeast system. PLZF is a phosphoprotein and plays multiple roles during cell growth. Our results suggest that hPFTAIRE1 and PCTAIRE1 may play important roles in the functional regulation of PLZF.