Species predicted to react based on 100% sequence homology:Mouse, Rat, Chicken, Xenopus, Zebrafish, Bovine
Specificity / Sensitivity
Phospho-TAK1 (Thr184/187) (90C7) Rabbit mAb detects endogenous levels of TAK1 only when phosphorylated at threonine 184 and threonine 187. In some cell lysates, the antibody may cross-react with a 40 kDa band of unknown origin.
Source / Purification
Monoclonal antibody is produced by immunizing animals with a phosphopeptide corresponding to residues surrounding Thr184 and Thr187 of human TAK1.
Background
TAK1 is a mitogen-activated protein kinase kinase kinase that can be activated by TGF-β, bone morphogenetic protein and other cytokines including IL-1 (1,2). In vivo activation of TAK1 requires association with TAK1 binding protein 1 (TAB1), which triggers phosphorylation of TAK1 (3,4). Another adaptor protein, TAB2, links TAK1 with TRAF6 and mediates TAK1 activation upon IL-1 stimulation (5). Once activated, TAK1 phosphorylates MAPK kinases MKK4 and MKK3/6, which activate p38 MAPK and JNK, respectively. In addition, TAK1 activates the NF-κB pathway by interacting with TRAF6 and phosphorylating the NF-κB inducing kinase (NIK) (2).