Insulin induces the phosphorylation of nucleolin. A possible mechanism of insulin-induced RNA efflux from nuclei.


Insulin induces the serine phosphorylation of the nucleolar protein nucleolin at subnanomolar concentrations in differentiated 3T3-442A cells. The stimulation is biphasic with phosphorylation reaching a maximum at 10 pM insulin and then declining to only 40% of basal levels at insulin concentrations of 1 microM. These changes are rapid, reaching half… (More)


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