An Abundant Evolutionarily Conserved CSB-PiggyBac Fusion Protein Expressed in Cockayne Syndrome
2008

CSB-PiggyBac Fusion Protein in Cockayne Syndrome

publication Evidence: high

Author Information

Author(s): John C. Newman, Arnold D. Bailey, Hua-Ying Fan, Thomas Pavelitz, Alan M. Weiner

Primary Institution: University of Washington

Hypothesis

The study investigates the role of a domesticated PiggyBac-like transposon in the Cockayne syndrome gene and its implications for the disease.

Conclusion

The CSB-PiggyBac fusion protein is conserved and continues to be expressed in cells lacking functional CSB, suggesting it may contribute to the Cockayne syndrome phenotype.

Supporting Evidence

  • The CSB-PGBD3 fusion protein is expressed in primary cells from patients with Cockayne syndrome.
  • The fusion protein has been conserved for at least 43 million years in primates.
  • Most mutations causing Cockayne syndrome do not prevent the expression of the CSB-PGBD3 fusion protein.

Takeaway

This study found that a special protein made from a gene involved in Cockayne syndrome is still made even when the main gene is broken, which might help explain why some people get the disease.

Methodology

The researchers used quantitative real-time RT-PCR and Western blotting to analyze the expression of the CSB-PGBD3 fusion protein in various cell lines.

Digital Object Identifier (DOI)

10.1371/journal.pgen.1000031

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