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Related Experiment Videos

Mouse hexokinase II gene: structure, cDNA, promoter analysis, and expression pattern.

S Heikkinen1, S Suppola, M Malkki

  • 1Department of Medicine, University of Kuopio, Finland.

Mammalian Genome : Official Journal of the International Mammalian Genome Society
|February 5, 2000
PubMed
Summary

Investigating the mouse hexokinase II (HKII) gene, this study details its genomic structure, promoter region, and tissue-specific expression. Understanding HKII is crucial for insights into insulin resistance and Type 2 diabetes.

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Area of Science:

  • Biochemistry
  • Genetics
  • Metabolic Diseases

Background:

  • Mammalian glucose metabolism relies on four hexokinase (HK) isoenzymes.
  • Hexokinase II (HKII) is a key glycolytic enzyme in insulin-sensitive tissues.
  • Dysfunctional HKII may link to insulin resistance and Type 2 diabetes.

Purpose of the Study:

  • To characterize the mouse HKII gene for future knockout studies.
  • To investigate the genomic structure, cDNA, regulatory region, and expression of mouse HKII.

Main Methods:

  • Genomic DNA sequencing
  • cDNA sequencing
  • Analysis of the 5' regulatory region
  • Tissue expression analysis

Main Results:

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  • The mouse HKII gene has 18 exons spanning ~50 kb.
  • The proximal promoter contains conserved transcription factor binding motifs.
  • Mouse HKII cDNA is ~5.5 kb, encoding a 917-amino acid protein.
  • HKII is predominantly expressed in skeletal muscle, heart, and adipose tissue.
  • Transcription and polyadenylation sites are conserved across species.

Conclusions:

  • Detailed characterization of the mouse HKII gene provides a foundation for further research.
  • Understanding HKII's role in key metabolic tissues is vital for diabetes research.