Target intelligence / Profile preview

Proinsulin

Molecular classification
Precursor polypeptide, Hormone
01

Overview

Proinsulin is a polypeptide precursor to insulin, produced in the pancreatic beta cells. It is the immediate biosynthetic precursor from which both insulin and C-peptide are derived. Elevated blood levels can indicate type 2 diabetes or insulinoma. Proinsulin itself has minimal biological activity compared to mature insulin.

02

Biological functions

Insulin biosynthesisGlucose homeostasis regulation
03

Disease associations

Type 2 DiabetesInsulinoma
04

Biomarkers

Beta-cell dysfunctionInsulinoma diagnosis

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