The protein encoded by this gene is a member of the membrane-associated guanylate kinase homologue (MAGUK) family. MAGUK proteins participate in the assembly of multiprotein complexes on the inner surface of the plasma membrane at regions of cell-cell contact. The product of this gene may play a role as scaffolding protein at cell-cell junctions. Alternatively spliced transcript variants encoding different isoforms have been identified.
AIP-3; AIP3; Atrophin-1-interacting protein 3; BAI1-associated protein 1; BAIAP1; BAP-1; BAP1; MAGI-1; membrane-associated guanylate kinase; Membrane-associated guanylate kinase inverted 1; Membrane-associated guanylate kinase, WW and PDZ domain-containing protein 1; TNRC19; trinucleotide repeat-containing gene 19; Trinucleotide repeat-containing gene 19 protein; WW and PDZ domain-containing protein 1; WW domain-containing protein 3; WWP3