Anti-eIF2a (phospho S51) Antibody - Identical to Abcam (ab131505) and Novus (NB100-81896)

This polyclonal antibody reagent from Antibodies.com specifically recognizes eIF2a when phosphorylated at serine 51, a modification imposed by stress-activated kinases including PERK, GCN2, HRI, and PKR. Detection of phospho-eIF2a is a standard read-out of the integrated stress response and is routinely used in studies of unfolded protein signaling, viral infection, amino acid deprivation, and redox imbalance. The antibody is raised in Rabbit, isotype IgG, and is supplied as 100 µl of unconjugated product. It is validated for Western blot, immunohistochemistry, and immunofluorescence workflows and reacts with Human, Mouse, and Rat samples, allowing comparative analysis across cell lines and rodent disease models.