Phosphorylation of c-jun mediated by MAP kinases

来自 Nature

阅读量:

186

摘要:

The proto-oncogene c-jun is a component of the AP-1 transcription factor family involved in the mediation of nuclear events elicited by extracellular stimuli. The c-jun protein is negatively regulated by phosphorylation of residues near the carboxy terminus which are dephosphorylated in response to phorbol esters. Here we identify two serine residues in the amino terminal A1 transactivation domain which are phosphorylated in response to a variety of mitogens, phorbol esters and activated ras. We present evidence that mitogen-activated protein-serine (MAP) kinases (pp54 and pp42/44) specifically phosphorylate these sites and that their phosphorylation positively regulates the transacting activity of c-jun. The MAP kinase enzymes pp54 and pp42/44 are regulated by tyrosine as well as serine/threonine phosphorylation. MAP kinase activation of c-jun may underlie the common stimulation of this transcription factor by mitogens, growth factors and oncogenes.

展开

DOI:

10.1038/353670a0

被引量:

3289

年份:

1991

相似文献

参考文献

引证文献

来源期刊

引用走势

1995
被引量:273

站内活动

辅助模式

0

引用

文献可以批量引用啦~
欢迎点我试用!

引用