Interaction between SPATC1L and PKA subunits. Samples precipitated with an anti-SPATC1L antibody were analyzed by immunoblotting with anti-RIα and anti-Cα antibodies. Immunoprecipitation of SPATC1L was confirmed by immunoblotting with anti-SPATC1L antibody. IgG was used as a control. IP, immunoprecipitation; In, input; IgG, immunoglobulin G from normal rabbit serum. 