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The Extraction of Liver Glycogen Molecules for Glycogen Structure Determination
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Normal and abnormal glycogen structure - A review.

Xin Liu1, Robert G Gilbert1

  • 1Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Zhongshan Biological Breeding Laboratory, and Jiangsu Key Laboratory of Crop Genetics and Physiology, College of Agriculture, Yangzhou University, Yangzhou 225009, China; Centre for Nutrition & Food Sciences, Queensland Alliance for Agriculture & Food Innovations (QAAFI), The University of Queensland, QLD 4072, Australia.

Carbohydrate Polymers
|May 19, 2024
PubMed
Summary
This summary is machine-generated.

Glycogen, an energy-storage glucose polymer, forms particles that aggregate. Differences in bonding between healthy and diabetic glycogen particles may impact blood sugar regulation.

Keywords:
Branched polymerDiabetesGlycogenα particle

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Area of Science:

  • Biochemistry
  • Molecular Biology

Background:

  • Glycogen is a branched glucose polymer serving as an energy reserve in animals and bacteria.
  • Glycogen consists of β particles that aggregate into larger α particles with rosette morphology.
  • The aggregation mechanisms and bonding of glycogen particles are not fully elucidated.

Purpose of the Study:

  • To investigate the structural differences and bonding mechanisms of glycogen particles.
  • To explore the implications of glycogen particle fragility in metabolic disorders like diabetes.

Main Methods:

  • Analysis of glycogen structure and bonding.
  • Comparative studies of glycogen from healthy and diabetic mammalian livers.
  • Assessment of glycogen particle fragility under specific conditions, such as exposure to dimethyl sulfoxide (DMSO).

Main Results:

  • Mammalian liver glycogen exhibits varying fragility, with diabetic glycogen fragmenting in DMSO while healthy glycogen remains intact.
  • This differential fragility suggests unknown differences in the bonding between β particles in healthy versus diabetic glycogen.
  • The observed fragility may be linked to altered molecular interactions within glycogen aggregates.

Conclusions:

  • There are discernible differences in the molecular bonding of glycogen particles between healthy and diabetic individuals.
  • Glycogen particle fragility, particularly in diabetic conditions, could play a role in impaired blood sugar regulation.
  • Further research is needed to fully understand the bonding mechanisms and their physiological relevance.