PRLR encodes the human gene, Prolactin receptor. It may also be known as: hPRLrI; MFAB; HPRL. The encoded protein has an amino acid length of 622 and a mass of 69.5 kDa. Other isoforms may exist. PRLR is a member of the Type I cytokine receptor family, Type 1 subfamily. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.