research

Function of AFF1 in P-TEFb network

Abstract

在真核细胞中,编码蛋白的基因转录是由RNA聚合酶II(RNAPolII)通过一系列复杂有序的调控机制完成的。不断深入的研究表明过去不受重视的转录延伸步骤也存在高度有序,极为精细的调控机制,这主要得益于正性转录延伸因子b(positive-transcriptionelongationfactorb,P-TEFb)的发现及对其功能的研究。P-TEFb复合体是由激酶CDK9(Cyclindependentkinase)及其调节亚基CycT1(CyclinT1)组成的异二聚体,其功能是作为基础转录延伸因子在转录延伸过程中通过磷酸化RNA聚合酶II大亚基CTD上的第2位丝氨酸来克服负性延伸因子对转录延...In eukaryotic cells, the transcription of protein-coding gene is performed by RNA polymerase II through a dynamic process consisting of several distinct but interconnected stages. After the identification of positive-transcription elongation factor b (P-TEFb) and characterization of its role in elongation control, accumulating evidence has revealed that the previously ignored transcription elongat...学位:理学博士院系专业:药学院_化学生物学学号:2052013015389

    Similar works