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Transcriptional activating regions target attached substrates to a cyclin-dependent kinase

机译:转录激活区域将附着的底物靶向细胞周期蛋白依赖性激酶

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摘要

The yeast cyclin-dependent kinase Srb10 phosphorylates various transcriptional activators as they activate transcription, and acidic transcriptional activating domains found on several activators directly bind Srb10. Here we show that the interaction between Srb10 (with its associated cyclin Srb11) and each of several different activating regions, in vitro, leads to the phosphorylation of peptide sequences attached to but outside of the activating regions themselves. In some cases, residues within the activating regions are also phosphorylated. The results define a mechanism by which a kinase is recruited to alternate substrates with diverse physiological consequences.
机译:酵母细胞周期蛋白依赖性激酶Srb10在激活转录时会将各种转录激活剂磷酸化,并且在几种激活剂上发现的酸性转录激活域直接结合Srb10。在这里,我们显示了Srb10(及其相关的细胞周期蛋白Srb11)与几个不同激活区域中的每一个之间的相互作用,在体外导致附着在激活区域本身之外的肽序列的磷酸化。在某些情况下,活化区内的残基也被磷酸化。结果定义了一种机制,通过该机制募集激酶以替代具有多种生理后果的底物。

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