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. 2011 Jan 15;22(2):266–277. doi: 10.1091/mbc.E10-07-0605

FIGURE 2:

FIGURE 2:

Phosphorylation of NLK is required for kinase activity. (A) Flowchart for the hyperautophosphorylation and dephosphorylation of NLK. (B) Untreated Flag-NLK, hyperautophosphorylated Flag-NLK, and dephosphorylated Flag-NLK were prepared as described in Materials and Methods. Flag-Tcf4 was expressed in HEK293 cells, and the proteins were immunopurified. Aliquots of purified Tcf4 and NLK proteins were subjected to non-RI in vitro kinase assay for 15 or 30 min and then immunoblotted with anti-Flag antibody. Purified NLK proteins were confirmed by immunoblotting with anti-Flag antibody (bottom).