Antigen: human Nrf2 C-terminal amino acids 579-592 . Host: rabbit . Cross Reactivity: (+) human, mouse, and rat Nrf2 . Application(s): FC, ICC, and WB . This C-terminal Nrf2 polyclonal antibody preferentially detects poly-ubiquitinated Nrf2 at 90 kDa. Nrf2 forms a heterodimer with a small Maf protein and binds to the antioxidant response element in the upstream promoter region of many antioxidative genes. Under normal, unstressed conditions, Nrf2 is sequestered in the cytoplasm where it is bound by Keap1 and cullin 3. Certain stressors disrupt Keap 1 binding and prevent ubiquitination, leading to subsequent translocation into the nucleus.