PDZD2: Proteins and Enzymes

PDZD2 (PSD95, Discs-large and ZO-1 domain-containing protein 2), also called AIPC (activated in prostate cancer) and PDZK3, is a multi-PDZ-domain protein that is ubiquitously expressed. The 2839 amino acid (aa) human PDZD2 is found in the endoplasmic reticulum. Caspase cleavage produces the 347 aa, 37 kDa secreted mature form (aa 2493-2839). A 2640 aa isoform is lacking 199 aa N-terminal to the mature sequence. The processed, mature form contains two PDZ domains which interact with the C-terminus of partner proteins, promotes maturation of pancreatic beta cells, and is highly expressed in human prostate tumors.