The Somatotropin family is a protein family whose titular representative is somatotropin, also known as growth hormone, a hormone that plays an important role in growth control. Other members include choriomammotropin (lactogen), its placental analogue; prolactin, which promotes lactation in the mammary gland, and placental prolactin-related proteins; proliferin and proliferin related protein; and somatolactin from various fishes.Benedet Perea, Susana (2008). Growth hormone and somatolactin function during sexual maturation of female Atlantic salmon. (Ph.D.) Department of Zoology/Zoophysiology, Göteborg University, Box 463, SE-405 30 Göteborg, Sweden The 3D structure of bovine somatotropin has been predicted using a combination of heuristics and energy minimisation.

Human peptides from this family CSH1; CSH2; CSHL1; GH1; GH2 (hGH-V); PRL;

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