FIGURE 5.
Persistence of binding of CaMKII after dephosphorylation. Purified recombinant protein phosphatase 1 (PP1) was added before (Pre-PP1) or after (Post-PP1) the kinase-channel complex was established as indicated. Washes were carried out in the presence or absence of 5 mm EGTA as indicated. A, binding of CaMKII to CaV2.1(1848–1964) GST was detected by GST pulldown assay. a, the blot was probed with anti-CaMKII. b, the same blot is shown after stripping and re-probing using anti-phospho-CaMKII(Thr-286). c, the same blot after stripping and re-probing using anti-GST to show equal loading of CaV2.1(1848–1964). B, binding of CaMKII to GST alone (control) was detected by GST pulldown assay. a, the blot was probed with anti-CaMKII. b, the same blot after stripping and re-probing using anti-phospho-CaMKII(Thr-286). c, the same blot after stripping and re-probing using anti-GST to show equal loading of GST.