4-1BB (CD137, TNFRSF9), is a surface glycoprotein, a receptor of TNFSF9/4-1BBL, belongs to the tumor necrosis factor (TNF) receptor superfamily[1]. 4-1BB is helpful for T cell activation and development, and also induces peripheral mononuclear cell proliferation and migration to the tumor microenvironment[2]. 4-1BB is also involved in enhancing Nrf2 and NF-kappaB pathway mediated apoptosis of endothelial cells[3]. CD137/4-1BB Protein, Rhesus Macaque (HEK293, His) has 186 amino acids (M1-Q186), produced by HEK293 cells with C-terminal His-tag.
