Recombinant full-length human cytoplasmic tyrosine-protein kinase BMX (BMX), also known as bone marrow tyrosine kinase gene in chromosome X protein, epithelial and endothelial tyrosine kinase, ETK, and NTK38 was expressed by baculovirus in Sf9 insect cells using an N-terminal GST tag, a.a. 1-675 (end). The gene accession number is NM_001721 (variant 2).