NCIt definition : Prolactin (227 aa, 26 kDa) is encoded by the human PRL gene. This protein is involved
in the promotion of lactation in the mammary gland.;
Alternative definition : NCI-GLOSS: A hormone that is made by the pituitary gland (a pea-sized organ in the
center of the brain). Prolactin causes a woman's breasts to make milk during and after
pregnancy, and has many other effects in the body.;
NCIt note : Prolactin proprotein is cleaved into an active peptide comprised of amino acid residues
29-227. (UniProt);