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Insulin - Wikipedia, the free encyclopedia |
 | | Insulin (from Latin insula, "island", as it is produced in the Islets of Langerhans in the pancreas) is a polypeptide hormone that regulates carbohydrate metabolism. |
 | | Insulin is synthesized in humans, and other mammals, within the beta cells (β-cells) of the islets of Langerhans in the pancreas. |
 | | In beta cells, insulin is synthesized from the proinsulin precursor molecule by the action of proteolytic enzymes known as prohormone convertases (PC1 and PC2), as well as the exoprotease carboxypeptidase E. These modifications of proinsulin remove the center portion of the molecule, or C-peptide, from the C- and N- terminal ends of the proinsulin. |
| en.wikipedia.org /wiki/Insulin (5976 words) |
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