Anti-MAP2K4 (phospho T261) Antibody - Identical to Abcam (ab194820)

A rabbit polyclonal IgG reagent from Antibodies.com raised against MAP2K4 (also known as MKK4, MEK4, or JNKK1) when phosphorylated at threonine 261. The phospho-specific epitope sits within the kinase activation segment, so the antibody selectively reports the activated, signaling-competent pool of MAP2K4 in JNK-pathway studies rather than total protein. Validation covers immunohistochemistry (IHC) and immunofluorescence (IF) on human, mouse, and rat tissue, making it useful for cross-species comparisons of stress-activated kinase signaling, cytokine-driven apoptosis, and tumor-suppressor pathways where MKK4 activity has been implicated. Supplied as an unconjugated 200 µl liquid aliquot; store at -20 °C in working aliquots to limit freeze-thaw cycles of the polyclonal preparation.