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Insulin: Biosynthesis, Chemistry, and Preparation

Insulin: Biosynthesis, Chemistry, and Preparation

The endoplasmic reticulum (ER) of pancreatic β-cells synthesizes preproinsulin, which consists of a signal peptide, A and B chains, and a C-peptide. Preproinsulin is then cleaved and folded into proinsulin, which translocates to the Golgi apparatus for sorting and packaging into secretory granules. In these granules, enzymatic clipping generates insulin and C-peptide.
Damage or functional impairment of β-cells inhibits insulin production, leading to diabetes. Diabetes treatment...

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Related Experiment Video

Updated: Nov 6, 2025

Hyperinsulinemic-euglycemic Clamps in Conscious, Unrestrained Mice

Hyperinsulinemic-euglycemic Clamps in Conscious, Unrestrained Mice

Published on: November 16, 2011

New Tools for Congenital Hyperinsulinism

Prisca Da Lozzo¹, Francesco Maria Risso², Jürgen Schleef²

¹University of Trieste, Trieste, Italy.

Clinical Pediatrics

|May 11, 2021

Summary

No abstract available in PubMed .

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