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首页> 外文期刊>Neuron >CREB transcriptional activity in neurons is regulated by multiple, calcium-specific phosphorylation events.
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CREB transcriptional activity in neurons is regulated by multiple, calcium-specific phosphorylation events.

机译:神经元中的CREB转录活性受多个钙特异性磷酸化事件的调节。

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摘要

The transcription factor CREB mediates diverse responses in the nervous system. It is not known how CREB induces specific patterns of gene expression in response to different extracellular stimuli. We find that Ca(2+) influx into neurons induces CREB phosphorylation at Ser133 and two additional sites, Ser142 and Ser143. While CREB Ser133 phosphorylation is induced by many stimuli, phosphorylation at Ser142 and Ser143 is selectively activated by Ca(2+) influx. The triple phosphorylation of CREB is required for effective Ca(2+) stimulation of CREB-dependent transcription, but the phosphorylation of Ser142 and Ser143, in addition to Ser133, disrupts the interaction of CREB with its cofactor CBP. These results suggest that Ca(2+) influx triggers a specific program of gene expression in neurons by selectively regulating CREB phosphorylation.
机译:转录因子CREB介导神经系统中的各种反应。未知CREB如何响应不同的细胞外刺激而诱导基因表达的特定模式。我们发现Ca(2+)涌入神经元在Ser133和两个额外的站点Ser142和Ser143诱导CREB磷酸化。虽然CREB ​​Ser133的磷酸化是由许多刺激引起的,但Ser(142)和Ser143的磷酸化却被Ca(2+)流入选择性激活。有效的Ca(2+)刺激CREB依赖的转录需要CREB的三磷酸化,但是Ser142和Ser143的磷酸化,除了Ser133,破坏了CREB及其辅因子CBP的相互作用。这些结果表明Ca(2+)涌入通过选择性调节CREB磷酸化来触发神经元中基因表达的特定程序。

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