Plakophilin 4: Proteins and Enzymes

Plakophilin 4, also known by its gene name PKP4, has multiple transcript variants, however only two have been fully characterized. Isoform 1 has 1,192 amino acids and is approximately 132 kDa and the shorter 1,149 amino acid long isoform is approximately 127 kDa. Plakophilin 4 is a member of the Beta Catenin family and the Plakophilin subfamily of Armadillo-like proteins. Plakophilin 4 regulates Rho activity during cytokinesis and may be implicated in the regulation of junctional plaques. Current research on Plakophilin 4 is being performed relating to several diseases and disorders including Alzheimer's Disease, schizophrenia, renal cell carcinoma and cardiomyopathy. PKP4 interacts with Presenilin 1, Erbin, OSGEP, Desmoplakin and GABARAP.