In vitro kinase assay, mammalian cell culture, transfection, immunoprecipitation, 32P orthophosphate metabolic labeling, as well as the antibodies used in this study were described previously (Cui et al., 2015 (link)). U2OS cells (RRID: CVCL_0042) were originally obtained from and authenticated by the American Type Culture Collection (ATCC, Manassas, VA). Rabbit anti-V5 polyclonal antibody (Millipore, Billerica, MA; AB3792; RRID: AB_91591) was used for immunoprecipitation. Monoclonal anti-V5 antibody (Life Technologies, Carlsbad, CA; R960-25; RRID: AB_2556564) and anti-FLAG antibody (Sigma, St. Louis, MO; F3165; RRID: AB_259529) were used for Western blotting.
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