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Related Experiment Videos

The mouse collagen X gene: complete nucleotide sequence, exon structure and expression pattern

K Elima1, I Eerola, R Rosati

  • 1Department of Medical Biochemistry, University of Turku, Finland.

The Biochemical Journal
|January 1, 1993
PubMed
Summary

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Researchers sequenced the mouse alpha 1(X) collagen gene, finding high conservation in key domains and a unique promoter structure. This gene is specifically expressed in hypertrophic chondrocytes during endochondral calcification.

Area of Science:

  • Genetics
  • Molecular Biology
  • Biochemistry

Background:

  • Type X collagen is crucial for endochondral ossification.
  • Understanding its genetic regulation is key to skeletal development research.

Purpose of the Study:

  • To isolate and characterize the mouse alpha 1(X) collagen gene, including its promoter and flanking regions.
  • To analyze sequence conservation and identify regulatory elements.

Main Methods:

  • Genomic library screening and nucleotide sequencing.
  • Comparative sequence analysis across species.
  • Primer extension, Northern, and in situ hybridization analyses.

Main Results:

  • The mouse alpha 1(X) collagen gene has a three-exon structure with a single exon for the triple-helical domain.

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  • High sequence conservation was observed in coding regions (collagenous, C-terminal) and 3'-untranslated sequences.
  • The promoter contains two functional TATAA boxes and exhibits unusually low G+C content.
  • Gene expression is restricted to hypertrophic chondrocytes.

    • Conclusions:

    • The characterized mouse alpha 1(X) collagen gene provides valuable sequence data.
    • Findings offer insights into collagen X gene regulation and promoter function.
    • This information is useful for future studies, including transgenic mouse models.