Hormone precursors.
Evidence for the existence of multiple forms of various peptide hormones has been accumulated. The processing of the hormone precursors by cleavage at specific arginine or lysine residues can account for the presence of multiple forms.
D000324:Adrenocorticotropic Hormone / Q000096:biosynthesis; D002766:Cholecystokinin / Q000096:biosynthesis; D004723:Endorphins / Q000096:biosynthesis; D005755:Gastrins / Q000096:biosynthesis; D005934:Glucagon / Q000096:biosynthesis / Q000378:metabolism; D006728:Hormones / Q000096:biosynthesis*; D007328:Insulin / Q000096:biosynthesis; D010281:Parathyroid Hormone / Q000096:biosynthesis; D010455:Peptides / Q000378:metabolism; D052336:Proglucagon; D011384:Proinsulin / Q000378:metabolism; D011498:Protein Precursors / Q000378:metabolism
D004723:Endorphins; D005755:Gastrins; D006728:Hormones; D007328:Insulin; D010281:Parathyroid Hormone; D010455:Peptides; D011498:Protein Precursors; D052336:Proglucagon; D000324:Adrenocorticotropic Hormone; D005934:Glucagon; D002766:Cholecystokinin; D011384:Proinsulin