PNN is a symbol for the gene, Pinin, desmosome associated protein, in humans. Other names include: Pinin; 140 kDa nuclear and cell adhesion-related phosphoprotein; Desmosome-associated protein; Domain-rich serine protein; DRS protein; DRSP; Melanoma metastasis clone A protein; Nuclear protein SDK3; SR-like protein; SDK3; memA. The encoded protein has an amino acid length of 717 and a mass of 81.6 kDa. PNN is a member of the Pinin family. This gene shares homology with other species, including: Fly, Mouse, Rat, Zebrafish, Frog, Chicken.