Phosphorylation in vivo of non-ribosomal proteins from native 40 S ribosomal particles of Krebs II mouse ascites-tumour cells.
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ABSTRACT: Four non-ribosomal proteins from native 40 S ribosomal subunits with mol.wts. of 110 000, 84 000, 68 000 and 26 000 were phosphorylated in vivo when ascites cells were incubated in the presence of [32P]Pi. The 110 000-, 84 000- and 26 000-dalton proteins are identical with phosphorylated products from native 40 S subunits after phosphorylation in vitro by a cyclic nucleotide-independent protein kinase. Phosphoserine was the major phosphorylated amino acid of the proteins phosphorylated in vivo and in vitro.
SUBMITTER: Schuck J
PROVIDER: S-EPMC1162839 | biostudies-other | 1981 Mar
REPOSITORIES: biostudies-other
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