The cAMP/PKA pathway activates CREB via phosphorylation, driving ABCC5 transcription. Elevated cAMP levels increase ABCC5 expression, enhancing drug efflux in cancer cells. PKA may also phosphorylate ABCC5 directly, altering its membrane localization or function.
Fig.1 Structure of the ABCC5 transporter protein. ABCC5 consists of two TMDs and two NBDs.1
