IBA1 Antibody / AIF-1

AIF1 (Allograft inflammatory factor 1), also called IBA1 (Ionized calcium-binding adapter molecule 1) is a cytoplasmic, calcium-binding protein that is thought to play a role in macrophage activation and function. AIF1/IBA1, containing two EF domains, is induced by cytokines and Interferons. In an unstimulated state, it colocalizes with actin, and upon stimulation, translocates to lamellipodia. It is also a marker of human microglia and is expressed by macrophages in injured skeletal muscle. The gene encoding the protein resides in the tumor necrosis factor (TNF) cluster of genes, located in the region represented by the human major histocompatibility complex (MHC).