The mammalian RACK1 protein binds activated protein kinase C, acting as an intracellular receptor to anchor the activated PKC to the cytoskeleton. Genes encoding RACK1-like proteins have been isolated from a wide range of eucaryotic organisms; we report the isolation of a Drosophila member of this family. This Drosophila RACK1-like protein shows 76% identity to the mammalian RACK1 proteins, but only about 60% identity to related proteins from plants and fungi. The Drosophila rack1 gene has a dynamic pattern of expression during early embryogenesis with the highest expression in the mesodermal and endodermal lineages.
Vani, K., Yang, G., & Mohler, J. (1997). Isolation and cloning of a Drosophila homolog to the mammalian RACK1 gene, implicated in PKC-mediated signalling. Biochimica et Biophysica Acta - Molecular Cell Research, 1358(1), 67–71. https://doi.org/10.1016/S0167-4889(97)00079-7