RACK1: a G-beta like protein containing 7 WD domains. A presumptive scaffold protein, linking protein kinase C to its substrates. Binds inositol 1,4,5-trisphosphate receptors and regulates Ca2+ release by enhancing inositol 1,4,5-trisphosphate receptor binding affinity for inositol 1,4,5-trisphosphate. An insulin-like growth factor 1 receptor-interacting protein that can regulate IGF-1-mediated Akt activation and protection from cell death.
Protein type: G protein, heterotrimeric; G protein; Adaptor/scaffold; Motility/polarity/chemotaxis; G protein, heterotrimeric beta; Nuclear receptor co-regulator
Chromosomal Location of Human Ortholog: 5q35.3
Cellular Component: cell soma; cytoplasm; cytosol; dendrite; midbody; mitochondrion; nucleus; perikaryon; perinuclear region of cytoplasm; phagocytic cup; small ribosomal subunit
Molecular Function: caspase activator activity; enzyme binding; ion channel inhibitor activity; protein binding; protein complex scaffold; protein homodimerization activity; protein kinase C binding; protein phosphatase binding; protein tyrosine kinase inhibitor activity; receptor binding; receptor tyrosine kinase binding; SH2 domain binding
Biological Process: caspase activation; cell cycle; gastrulation; negative regulation of cell growth; negative regulation of peptidyl-serine phosphorylation; negative regulation of phagocytosis; negative regulation of protein kinase B signaling cascade; negative regulation of translation; negative regulation of Wnt receptor signaling pathway; osteoblast differentiation; positive regulation of apoptosis; positive regulation of cAMP catabolic process; positive regulation of cell migration; positive regulation of cyclic-nucleotide phosphodiesterase activity; positive regulation of Golgi to plasma membrane protein transport; positive regulation of GTPase activity; positive regulation of mitochondrial depolarization; positive regulation of proteasomal ubiquitin-dependent protein catabolic process; positive regulation of protein amino acid phosphorylation; positive regulation of protein homooligomerization; regulation of cell cycle; regulation of cell division; regulation of protein localization; rhythmic process; viral reproduction
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