Figure 5. The C-terminal tail enhances binding of xDsh and mPer1 to mutant CKIε.
(A) GST, GST-CKIε, or GST-CKIε N275I/R279T was bound to glutathione sepharose and incubated with 35S-labeled xDsh or mPer1. (B) Quantification of three independent experiments. Values are normalized against the amount of protein bound by GST-CKIε.