Immunoreactivity of PKC gammalambda and RACK1 in baker's yeast, lobster and wheat germ

Varied patterns of immunoreactive bands of protein kinase C gamma (PKC gamma) and receptor for activated C-kinase-1 (RACK1) were detected by analysis of Western blots in crude extracts of wheat germ, lobster tail meat, and three strains of baker's yeast. Anti-PKC lambda also reacted with wheat germ and yeast extracts, but failed to react with the lobster extract. The findings may implicate a regulatory role and an evolutionary conservation of these PKC isoenzymes and their receptor proteins in eukaryotes.