Ligand-induced polyubiquitination of receptor tyrosine kinases.
摘要：
The platelet-derived growth factor beta-receptor undergoes polyubiquitination as a consequence of ligand binding. In the present study, we have examined the ligand-induced receptor ubiquitination also in the other receptor tyrosine kinase (structurally different) subfamilies by immunoblotting with anti-ubiquitin antiserum. In addition to the platelet-derived growth factor alpha- and beta-receptors, all the monomeric receptor tyrosine kinases examined, such as the receptors for epidermal growth factor (subfamily I), colony stimulating factor-1 (subfamily III), and fibroblast growth factor (subfamily IV), were found to be ubiquitinated after ligand stimulation. However, the insulin receptor (subfamily II), which is a tetrameric molecule, was not. These data suggest that the ligand-induced polyubiquitination of the receptor is a general phenomenon observed in most of the monomeric receptor tyrosine kinases.
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DOI：
10.1006/bbrc.1995.2094
被引量：
年份：
1995
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