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Related Experiment Videos

Rabbit serum amyloid a gene: cloning, characterization and sequence analysis.

B K Ray1, A Ray

  • 1Department of Veterinary Microbiology, College of Veterinary Medicine, University of Missouri, Columbia 65211.

Biochemical and Biophysical Research Communications
|November 14, 1991
PubMed
Summary

Researchers isolated a rabbit serum amyloid A (SAA) gene, revealing it belongs to a multi-gene family. This gene contains regulatory elements crucial for SAA protein expression in rabbits.

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Area of Science:

  • Genomics
  • Molecular Biology
  • Biochemistry

Background:

  • Serum amyloid A (SAA) proteins are acute-phase reactants involved in inflammation.
  • Understanding the genetic regulation of SAA is crucial for studying inflammatory diseases.

Purpose of the Study:

  • To isolate and characterize the genomic DNA clone encoding rabbit serum amyloid A (SAA) protein.
  • To investigate the structural organization and regulatory elements of the rabbit SAA gene.

Main Methods:

  • Isolation of a genomic DNA clone from a rabbit liver lambda EMBL3 genomic library.
  • Southern blot analysis to determine gene family size.
  • Nucleotide sequencing to identify gene structure and regulatory elements.

Main Results:

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  • A genomic DNA clone encoding rabbit SAA protein was successfully isolated.
  • Southern blot analysis confirmed the SAA gene is part of a multi-gene family in rabbits.
  • The gene spans 4500 base pairs, contains four exons, and possesses a TATA box and polyadenylation signal.
  • Upstream sequences contain binding sites for NF-kappa B, IL-6 receptor, and Sp1.

Conclusions:

  • The isolated rabbit SAA gene shares structural similarities with a previously identified SAA cDNA.
  • The identified regulatory elements suggest complex transcriptional control of SAA gene expression.
  • Further studies can elucidate the functional significance of these regulatory elements in SAA expression during inflammatory responses.