Anti-MKK3 (Phospho-Ser189)

Anti-MKK3 (Phospho-Ser189) — Y011145 — is a rabbit polyclonal antibody detecting MAP2K3/MKK3 (~36–38 kDa) phosphorylated at Ser189 in the activation loop, a direct marker of MKK3 kinase activation upstream of p38 MAPK in the cellular stress response pathway. Validated for WB, IHC, and IF in human, mouse, and rat. Affinity-purified. Store at –20 °C.