MeSH note : a PKHD1 homolog, in chromosome region 8q23; a large receptor protein (4243 aa; 466
kDa) with a signal peptide, single transmembrane domain and short cytoplasmic tail;
it is homologous to fibrocystin throughout most of the extracellular region with overall
identity of 25.0% and similarity of 41.5%. RefSeq NP_803875;