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The human tenascin-R gene

A Leprini1, R Gherzi, A Siri

  • 1Laboratory of Cell Biology, Istituto Nazionale per la Ricerca sul Cancro, Largo R. Benzi, 10, 16132 Genova, Italy. lzardi@cisi.unige.it

The Journal of Biological Chemistry
|December 6, 1996
PubMed
Summary

Researchers elucidated the human tenascin-R gene structure, comprising 21 exons. This finding aids in understanding central nervous system development defects potentially caused by tenascin-R gene mutations.

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Area of Science:

  • Genetics
  • Neuroscience
  • Molecular Biology

Background:

  • The human tenascin-R gene encodes a protein primarily found in the central nervous system.
  • Tenascin-R is believed to be crucial for axonal pathfinding during embryonic development due to its adhesive and repulsive functions.
  • The primary structure of human tenascin-R was recently determined.

Purpose of the Study:

  • To define the structure of the human tenascin-R gene.
  • To investigate the role of human tenascin-R in central nervous system development.

Main Methods:

  • Gene structure determination of human tenascin-R.
  • Sequence analysis of intron splice donor and acceptor sites.
  • Comparison of intron positions with tenascin-C and tenascin-X.

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Main Results:

  • The human tenascin-R gene spans approximately 85 kilobases on chromosome 1 and consists of 21 exons.
  • Exon sizes range from 90 to over 670 base pairs.
  • Intron positions in human tenascin-R are conserved across tenascin family members (tenascin-C and tenascin-X).

Conclusions:

  • The defined gene structure provides a basis for investigating mutations in human tenascin-R.
  • Understanding tenascin-R gene structure is essential for studying central nervous system development defects.
  • Conservation of intron positions suggests evolutionary relationships within the tenascin gene family.