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Related Experiment Videos

The zebrafish Fgf-3 gene: cDNA sequence, transcript structure and genomic organization

P Kiefer1, U Strähle, C Dickson

  • 1Laboratory of Viral Carcinogenesis, Imperial Cancer Research Fund, London, UK.

Gene
|February 12, 1996
PubMed
Summary

Researchers isolated and characterized zebrafish fibroblast growth factor 3 (FGF3) using genomic and cDNA clones. This study details the gene

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Area of Science:

  • Developmental Biology
  • Genetics
  • Molecular Biology

Background:

  • Fibroblast Growth Factor 3 (FGF3) is crucial in vertebrate development.
  • Understanding FGF3 in zebrafish (Danio rerio) can provide insights into conserved developmental pathways.

Purpose of the Study:

  • To isolate and characterize zebrafish fibroblast growth factor 3 (FGF3) genomic and cDNA clones.
  • To analyze the structure and regulation of the zebrafish Fgf-3 gene.

Main Methods:

  • Polymerase Chain Reaction (PCR) amplification using degenerate primers.
  • Screening of a zebrafish embryonic cDNA library.
  • DNA sequencing of cDNA and genomic clones.
  • RNase protection assays.

Main Results:

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  • Isolation of two zebrafish FGF3 cDNA clones, with the longest being 1810 bp encoding a 256-amino acid protein.
  • High sequence identity (78%) in the central region with Xenopus laevis FGF3 and 72% with human FGF3.
  • Significant differences in the N- and C-terminal domains compared to known FGF3 homologues.
  • Identification of two distinct promoters regulating zebrafish Fgf-3 (ZFgf-3) expression, analogous to the mouse gene structure.

Conclusions:

  • Zebrafish FGF3 shares conserved functional regions but possesses unique terminal domains.
  • The zebrafish Fgf-3 gene is regulated by at least two promoters, similar to its mouse counterpart.
  • This characterization provides a foundation for further research into FGF3 function in zebrafish development.