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PIPPin, a putative RNA-binding protein specifically expressed in the rat brain
D Castiglia1, M Scaturro, T Nastasi
1Dipartimento di Biologia Cellulare e dello Sviluppo Alberto Monroy, Palermo, Italy.
Biochemical and Biophysical Research Communications
|January 5, 1996
Summary
Researchers identified a novel gene in rat brains encoding a protein with two RNA-binding domains. This gene is specifically expressed in the brain and conserved across species, suggesting an important role in brain function.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Identifying novel RNA-binding factors is crucial for understanding gene regulation.
- Rat brain RNA was used to construct an expression library for screening.
Purpose of the Study:
- To identify genes encoding RNA-binding factors in the developing rat brain.
- To characterize a novel cDNA encoding a protein with double-stranded RNA-binding domains.
Main Methods:
- Construction of a lambda gt11 expression library from rat brain poly(A)+ RNA.
- Screening the library using in vitro transcribed radioactive RNA encoding rat histone variant H3.3.
- Analysis of gene expression and conservation using Southern blot.
Main Results:
- A cDNA encoding a protein with two putative double-stranded RNA-binding domains (dsBD) was identified.
- The corresponding mRNA is specifically expressed in the brain.
- The gene is highly conserved from Drosophila melanogaster to humans.
Conclusions:
- A novel brain-specific RNA-binding protein was discovered.
- The conserved nature of the gene suggests a fundamental role in biological processes.
- Further research is warranted to elucidate the function of this protein in the brain.