PRKD1 Protein, Human (sf9)

PRKD1, a serine/threonine-protein kinase, orchestrates a myriad of cellular functions by converting transient diacylglycerol (DAG) signals into sustained physiological effects downstream of PKC. Involved in diverse pathways, PRKD1 regulates MAPK8/JNK1 and Ras signaling, maintains Golgi membrane integrity, promotes cell survival through NF-kappa-B activation, influences cell migration, mediates cell differentiation by facilitating HDAC7 nuclear export, regulates cell proliferation via MAPK1/3 (ERK1/2) signaling, and plays roles in cardiac hypertrophy, VEGFA-induced angiogenesis, genotoxic-induced apoptosis, and flagellin-stimulated inflammatory responses. Notably, PRKD1 phosphorylates the epidermal growth factor receptor (EGFR), suppressing EGF-induced MAPK8/JNK1 activation and subsequent JUN phosphorylation. It also phosphorylates RIN1, affecting its binding to 14-3-3 proteins and modulating competition with RAF1 for binding to GTP-bound Ras proteins. Furthermore, PRKD1 participates in Golgi membrane trafficking, impacting protein transport along the secretory pathway and orchestrating vesicle fission in the trans-Golgi network (TGN). The kinase's multifaceted involvement extends to angiogenesis, osteoblast differentiation, and cardiac hypertrophy, demonstrating its critical regulatory roles in various cellular processes.