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Updated: Sep 30, 2025
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Coculture Analysis of Extracellular Protein Interactions Affecting Insulin Secretion by Pancreatic Beta Cells
Published on: June 15, 2013
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Insulin aspart dimer dissociation in water
Yagya Chaudhary1, Prabhakar Bhimalapuram1
1Centre for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Hyderabad, Telangana 500032, India.
The Journal of Chemical Physics
|March 16, 2022
Summary
Insulin aspart dimer dissociation occurs via diverse pathways, influenced by water molecules stabilizing the active monomer. Understanding these molecular details is crucial for developing effective insulin therapies.
Area of Science:
- Biochemistry
- Molecular Biology
- Pharmacology
Background:
- Insulin, a key metabolic hormone, exists in hexameric, dimeric, and monomeric forms.
- Impaired insulin secretion necessitates insulin analogs for glucose metabolism, with dissociation rates determining action speed.
- Insulin aspart is a rapid-acting analog, but its dimer dissociation mechanism remains unclear.
Purpose of the Study:
- To elucidate the energetic and structural characteristics of insulin aspart dimer dissociation.
- To identify the molecular pathways and conformational changes involved in this process.
Main Methods:
- Molecular dynamics simulations.
- Umbrella sampling techniques.
Main Results:
- Insulin aspart dimer dissociation proceeds through a spectrum of pathways, ranging from minimal structural change to coupled unfolding.
- Water molecules are essential for stabilizing the dissociated monomeric forms.
- Variations in structure, orientation, and conformational changes characterize the minimum energy pathways.
Conclusions:
- The study provides detailed molecular insights into insulin aspart dimer dissociation.
- Understanding these mechanisms can inform the design of improved insulin analogs for diabetes management.
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