| Modification Notes |
PKDREJ (polycystic kidney disease and receptor for egg jelly-related protein) is a 2,253 amino acid multi-pass membrane protein that belongs to the polycystin family and is encoded by an intronless gene. Expressed exclusively in testis, PKDREJ is thought to play a key role in fertilization, possibly by generating a calcium transport channel that is directly associated with the acrosome reaction of the sperm. Human PKDREJ, which can exist as homomultimers or heteromultimers, shares 64% identity with its mouse homolog, suggesting a conserved function between species. PKDREJ contains one receptor for egg jelly (REJ) domain, eleven transmembrane domains, one G-protein-coupled receptor proteolytic site (GPS) domain and one lipoxygenase domain. Several isoforms of PKDREJ exist due to alternative splicing events. |