Cayman TIM-4 Extracellular Domain (human, recombinant) - Biotinylated

TIM-4 is a type I transmembrane protein and member of the T cell immunoglobulin and mucin domain-containing (TIM) family of immunoregulatory proteins.¹ It is composed of an N-terminal immunoglobulin variable (IgV) domain that binds to phosphatidylserine, as well as a mucin stalk, which contains O- and N-linked glycosylation sites, a transmembrane domain, and a C-terminal cytoplasmic tail, which lacks a tyrosine phosphorylation site, unlike TIM-1 and TIM-3.^2,1 TIM-4 is expressed in antigen-presenting cells (APCs) such as dendritic cells and macrophages and binds to TIM-1 on activated T cells.³ It is mainly involved in phagocytosis of apoptotic cells via recognition of phosphatidylserine, but also plays a role in T cell proliferation and survival, viral entry, and antitumor immunity.^2,4,5,6 TIM-4 targeting antibodies prevent HIV-1 entry into host cells in vitro and enhance the efficacy of anticancer vaccines in a murine melanoma model.^5,6 SNPs in TIMD4 are associated with increased susceptibility of asthma in children.⁷ Caymans TIM-4 Extracellular Domain (human, recombinant) - Biotinylated protein consists of 302 amino acids, has a calculated molecular weight of 32.7 kDa, and a predicted N-terminus of Glu25 after signal peptide cleavage. By SDS-PAGE, the apparent molecular mass of the protein is approximately 60 kDa due to glycosylation.

WARNING This product is not for human or veterinary use.