Kim SI, Kwak JH, Na HJ, Kim JK, Ding Y, Choi ME. Transforming growth factor-beta (TGF-β1) activates TAK1 via TAB1-mediated autophosphorylation, independent of TGF-β receptor kinase activity in mesangial cells. J Biol Chem. (2009) 284(33):22285-96. PMCID: PMC2755952