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Insulin: Biosynthesis, Chemistry, and Preparation01:25

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Insulin secretory vesicles release insulin to stimulate blood glucose uptake and regulate carbohydrate metabolism. When the blood glucose levels increase, glucose enters the pancreatic β-islet cells through glucose transporters. Once inside, glucose is metabolized through glycolysis, the citric acid cycle, and the electron transport chain, producing ATP. This increase in ATP concentration closes ATP-sensitive potassium channels, leading to depolarization of the membrane and the opening of...
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Progress in Simulation Studies of Insulin Structure and Function.

Biswajit Gorai1, Harish Vashisth1

  • 1Department of Chemical Engineering, University of New Hampshire, Durham, NH, United States.

Frontiers in Endocrinology
|July 7, 2022
PubMed
Summary
This summary is machine-generated.

Molecular dynamics simulations reveal how insulin changes shape from hexamer to monomer, crucial for its glucose-regulating function in diabetes treatment. This helps understand insulin analogs.

Keywords:
computer simulationdiabeteshormoneinsulininsulin receptormolecular dynamicspeptide

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Area of Science:

  • Biochemistry
  • Structural Biology
  • Computational Chemistry

Background:

  • Insulin, a key peptide hormone, regulates blood glucose and is vital for diabetes mellitus treatment.
  • Insulin exists as a hexamer in pancreatic beta-cells but functions as a monomer, undergoing conformational changes.
  • Understanding insulin's structural dynamics is essential for its therapeutic applications.

Purpose of the Study:

  • To review the role of molecular dynamics (MD) simulations in understanding insulin's conformational dynamics.
  • To elucidate the atomic-level details of insulin's structural transitions between monomer, dimer, and hexamer states.
  • To highlight conformational dynamics of insulin analogs and mimetics.

Main Methods:

  • Extensive review of molecular dynamics (MD) simulation studies on insulin structure.
  • Analysis of insulin's conformational variations under different conditions (solvent, pH, temperature, pressure).
  • Focus on monomer, dimer, and hexamer states of insulin.

Main Results:

  • MD simulations provide atomic-level insights into insulin's conformational transitions.
  • Environmental factors like pH and temperature significantly influence insulin's structure.
  • Conformational dynamics of insulin analogs are linked to their activity.

Conclusions:

  • Molecular dynamics simulations are powerful tools for studying insulin's structural behavior.
  • Understanding these dynamics is key to developing effective insulin analogs for diabetes.
  • Future computational methods hold promise for designing novel synthetic insulins.