MER tyrosine kinase (MERTK) is a transmembrane protein with transmembrane receptor protein tyrosine kinase activity. MERTK has oncogenic properties and is often overexpressed or activated in various malignancies, activating several downstream signaling pathways including MAPK/ERK, PI3K/AKT, and JAK/STAT. MERTK is involved in animal organ development, synapse elimination, neutrophil clearance and protein kinase B signaling. Mer Protein, Human (HEK293, His) is the recombinant human-derived Mer protein, expressed by HEK293 , with C-6*His labeled tag.