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. 2013 Jul 29;288(37):26678–26687. doi: 10.1074/jbc.M113.466433

FIGURE 4.

FIGURE 4.

Cyclin D1 promotes the activity of NDR kinase independent of Cdk4. A, 293T cells were cotransfected with pCMV-FLAG-NDR2 alone or with pCMV-Myc-Cdk4 or pCMV-Myc-cyclin D1. The cell lysates were harvested and subjected to immunoblotting with anti-NDR phospho-Ser-281/phospho-Ser-282 antibody. B, 293T cells were cotransfected with pCMV-FLAG-NDR2 alone or with pCMV-Myc-cyclin D1 or pCMV-Myc-cyclin D1 K112E. The cell lysates were harvested and subjected to immunoblotting with anti-NDR phospho-Ser-281/phospho-Ser-282 or anti-NDR phospho-Thr-444/phospho-Thr-442 antibody. C, 293T cells were cotransfected with pCMV-FLAG-NDR2 alone or with pCMV-Myc-cyclin D1 or pCMV-Myc-cyclin D1 K112E. The cell lysates were immunoprecipitated with anti-FLAG antibody. The beads were incubated with 1 μg of GST-p21 in the presence of [γ-32P]ATP for in vitro kinase assay. The samples were assessed by SDS-PAGE, followed by autoradiography of the gel. CBB, Coomassie Brilliant Blue.