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[Cloning and sequence analysis of cDNA encoding PPAR from goose].
He Meng1, Hui Li, Xiang-Yu Wang
1College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China. menghe@sjtu.edu.cn
Yi Chuan = Hereditas
|January 11, 2005
Summary
Researchers cloned and sequenced goose PPARalpha and PPARgamma genes, revealing their crucial, conserved roles in avian and mammalian growth, particularly in fat metabolism.
Area of Science:
- Molecular Biology
- Genetics
- Comparative Genomics
Background:
- Peroxisome proliferator-activated receptors (PPARs) are nuclear receptors regulating gene expression.
- Understanding PPAR gene evolution and function is vital for animal development and metabolism.
Purpose of the Study:
- To clone and sequence cDNA encoding PPARalpha and PPARgamma in geese.
- To analyze the evolutionary conservation and identify potential physiological functions of these PPAR genes.
Main Methods:
- Reverse Transcription Polymerase Chain Reaction (RT-PCR) for cDNA cloning.
- Sequence analysis and homologous comparison across multiple species.
Main Results:
- Successfully cloned and sequenced goose PPARalpha (1407bp) and PPARgamma (1428bp) cDNA for the first time.
- High sequence identity (87.43% for PPARalpha, 92.00% for PPARgamma) observed between goose and other species.
- Analysis across 17 species indicated high conservation within PPAR subtypes (alpha, gamma, beta/delta) but lower identity between subtypes.
Conclusions:
- Goose PPARalpha and PPARgamma genes are evolutionarily conserved.
- These genes likely play significant physiological roles in the growth and development of birds and mammals, especially in fat metabolism.