Purity ~95% (SDS-PAGE). TACSTD1, also known as tumor-associated calcium signal transducer 1, is a membrane glycoprotein expressed on adenomatous and simple epithelia, where it is involved in homophilic adhesion at the basolateral membrane. It may act as a physical homophilic interaction molecule between intestinal epithelial cells (IECs) and intraepithelial lymphocytes (IELs) at the mucosal epithelium for providing immunological barrier as a first line of defense against mucosal infection. It plays a role in embryonic stem cells proliferation and differentiation. Source: Recombinant protein corresponding to aa24-265 from human TACSTD1, fused to His-tag at C-terminal expressed in insect cell. Molecular Weight: ~28.2kD (248aa) AA