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The human vigilin gene: identification, chromosomal localization and expression pattern

G Plenz1, S Kügler, S Schnittger

  • 1Institut für Medizinische Molekularbiologie, Medizinische Universität zu Lübeck, Germany.

Human Genetics
|May 1, 1994
PubMed
Summary

Researchers identified the human vigilin gene using chicken cDNA clones. This gene, located on chromosome 2, shows high sequence homology and conserved structure with its chicken counterpart.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Human Gene Identification

Background:

  • The vigilin gene's function and structure were previously studied in chickens.
  • Understanding the human vigilin gene is crucial for comparative genomics and disease research.

Purpose of the Study:

  • To isolate and characterize the human vigilin gene.
  • To determine the human vigilin gene's chromosomal location and structure.
  • To analyze the expression pattern of human vigilin mRNA.

Main Methods:

  • Screening a human genomic library using chicken vigilin cRNA clones.
  • Restriction mapping and sequencing of isolated cosmid clones.
  • Fluorescence in situ hybridization (FISH) for gene mapping.

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Main Results:

  • The human vigilin gene was isolated and identified, showing high sequence homology (77-82% cDNA, 91-100% amino acid) with chicken vigilin.
  • The gene spans approximately 50 kb and is located on chromosome 2q36-q37.2.
  • Human vigilin gene expression is dependent on cytodifferentiation stages.

Conclusions:

  • The human vigilin gene is structurally conserved and shares significant sequence similarity with its chicken ortholog.
  • The localization of the human vigilin gene near collagen gene clusters and Waardenburg syndrome locus suggests potential functional or clinical relevance.
  • Human vigilin gene expression is regulated by cellular differentiation processes.