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dSlo binds to a catalytically inactive PKAc mutant (K72E). tsA201 cells were transfected with dSlo alone (lane 1), dSlo and K72E PKAc (lane 2), or dSlo and wild-type PKAc (WT; lane 3). dSlo immunoprecipitates were probed on parallel Western blots for PKAc with anti-PKAc antibody (top panel) or for dSlo phosphorylation with anti-pS942 antibody (middle panel). The expression of PKAc is similar for wild-type and mutant PKAc under these transfection conditions (bottom panel).
