(a) Summary of “dual residency proteins” (locating at the plasma membrane and at the nucleus) associating with ZO-proteins at the junctional site. (b) Nuclear interactions of ZO proteins. ZONAB: ZO-1 associated nucleic acid binding protein; Cdk-4: Cyclin-dependent kinase-4; ARVCF: Armadillo repeat gene deleted in velo-cardio-facial syndrome; SC35: Splicing factor 35.
