Human pituitary prolactin (hPRL): the entire linear amino acid sequence.

For the first time the entire linear amino acid sequence of hPRL has been ascertained. The sequence features 198 amino acid residues, leucine at the NH2-terminus, and 6 half custines. hPRL sequence identity with porcine, ovine, and rat PRL is 77, 73, and 60%, respectively. However, hPRL sequence identity with hGH is only 16%, and with human placental lactogen 13%.