
JNK1β1 is phosphorylated during expression in E. coli and in vitro by MKK4 at three identical novel sites
Keywords: JNK, c-Jun N-terminal kinase; MAPK, mitogen-activated protein kinase; MEKK, mitogen-activated ERK-regulating kinase kinase; MKK, mitogen-activated protein kinase kinase; ATF2, activating transcription factor 2; LC–MS, liquid chromatography mass spectromet