PDGF R alpha protein is a tyrosine protein kinase receptor for PDGFA, PDGFB, and PDGFC that coordinates embryonic development, cell proliferation, survival, and chemotaxis. Their functions vary, promoting or inhibiting cell proliferation and migration depending on the situation. PDGF R alpha Protein, Rat (HEK293, His) is the recombinant rat-derived PDGF R alpha protein, expressed by HEK293 , with C-His labeled tag.