| ACAP 1 has been shown recently to function as a transport effector in the cargo sorting of transferrin receptor ( TfR ) that undergoes constitutive recycling . ^^^ However , in contrast to TfR recycling , the role of ACAP 1 in beta 1 recycling requires its phosphorylation by Akt , which is , in turn , regulated by a canonical signaling pathway . ^^^ |