the observation that protein s6 can be phosphorylated by the purified ca2+-phospholipid-dependent protein kinase may link recent reports that phorbol ester tumor promoters activate the ca2+-phospholipid-dependent protein kinase in vitro and stimulate phosphorylation of the ribosomal protein s6 in vivo .
C0033640
protein kinase
C0031715
phosphorylation