Protein Phosphatase 2A Acts as a Mitogen-activated Protein Kinase Kinase Kinase 3 (MEKK3) Phosphatase to Inhibit Lysophosphatidic Acid-induced IκB Kinase β/Nuclear Factor-κB Activation

Sun, Wenjing; Wang, Hao; Zhao, Xiumei; Yu, Yang; Fan, Yihui; Wang, Hao; Wang, Xishan; Lu, Xiongbin; Zhang, Guiyin; Fu, Songbin; Yang, Jianhua

doi:10.1074/jbc.m110.104224

Protein Phosphatase 2A Acts as a Mitogen-activated Protein Kinase Kinase Kinase 3 (MEKK3) Phosphatase to Inhibit Lysophosphatidic Acid-induced IκB Kinase β/Nuclear Factor-κB Activation

MEKK3 is a central intermediate signaling component in lysophosphatidic acid (LPA)-induced activation of the nuclear factor-κB (NF-κB). However, the precise mechanism for the termination of MEKK3 kinase activity is not fully understood. Using a functional genomic approach, we have identified a pr…