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Biochem Biophys Res Commun. 1986 Oct 15;140(1):379-85.

Rapid dephosphorylation of a Mr 80,000 protein, a specific substrate of protein kinase C upon removal of phorbol esters, bombesin and vasopressin.

Abstract

The mitogens phorbol 12,13-dibutyrate, bombesin and vasopressin stimulate the phosphorylation of an acidic Mr 80,000 cellular protein, a specific substrate of protein kinase C, in intact Swiss 3T3 cells. Phosphorylation of this substrate was rapidly reversed upon the removal of each of these agents. Dephosphorylation occurred with a similar half-life in each of the cases studied (2.2, 1.5 and 2 minutes for phorbol 12,13-dibutyrate, bombesin and vasopressin respectively) and agreed closely with the dissociation of the ligands from their specific high-affinity binding sites in Swiss 3T3 cells.

PMID:
3465323
DOI:
10.1016/0006-291x(86)91101-0
[Indexed for MEDLINE]

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