TIA-1 (D1Q3K) Rabbit Monoclonal Antibody #86050

T-cell intracellular antibody 1 (TIA-1) is a member of the RNA-recognition motif (RRM) family of RNA-binding proteins that was originally found to induce DNA fragmentation in digitonin-permeabilized thymocytes (1). TIA-1 protein has about 80% identity to the related TIAR protein, both of which possess three amino-terminal RRM domains and a glutamine-rich carboxyl terminus (1,2). Alternative splicing is responsible for generating at least two isoforms of TIA-1 and TIAR (3,4). Several research studies indicate that TIA-1 and TIAR play a role in apoptosis, cellular stress, and inflammation. Importantly, TIA-1 and TIAR translocate from the nucleus to stress granules in response to a variety of environmental stresses (5-8). Stress granules function as sites of translational repression in response to potentially damaging conditions. mRNA transcripts targeted by TIA-1 and TIAR include TNF-α, Cox2, cytochrome c, GADD45α, and HIF-1α (8-13).