Novel serine phosphorylation of pp60c-src in intact cells after tumor promoter treatment.
AUTOR(ES)
Gentry, L E
RESUMO
Treatment of normal cells with the tumor promoters 12-O-tetradecanoylphorbol-13-acetate and mezerein results in increased phosphorylation of pp60c-src. Two-dimensional tryptic phosphopeptide analysis of partial V8 protease fragments indicated that this phosphorylation takes place on a serine residue which lies within the amino-terminal 18 kilodaltons of pp60c-src and represents the major phosphorylation site following tumor promoter treatment. Untreated cells exhibited a low but detectable level of phosphorylation at this serine residue. The significance of these results with respect to the phosphoregulation of pp60c-src as well as tumor promotion is discussed.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=367568Documentos Relacionados
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