Phospho-JNK1/2/3 (Thr183/Y185) Antibody detects endogenous levels of JNK1/2/3 only when phosphorylated at Threonine 183+Tosine 185. JNK3 a protein kinase of the MAPK family that is potently activated by a variety of environmental stress and pro-inflammatory cytokines. Brain-selective JNK isoform.