Description
Gas6 (Growth Arrest Specific 6) is a secreted protein that contains an extensively gamma-carboxylated N-terminal Gla domain and is dependent upon vitamin K for activity. Gas6 signals through the receptors Axl, Dtk/Tyro3, and Mer and is inhibited by shed soluble forms of Axl and Mer. Gas6 protects cells from stress-induced apoptosis and promotes phagocytosis of apoptotic cell debris, promotes platelet activation but inhibits inflammatory cytokine production, and inhibits VEGF-induced angiogenesis, and regulates tumor cell invasiveness