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The sequence and tissue expression of ovine renin
G P Aldred1, P Fu, R J Crawford
1Howard Florey Institute of Experimental Physiology and Medicine, Parkville, Victoria, Australia.
Journal of Molecular Endocrinology
|February 1, 1992
Summary
Researchers determined the sheep renin precursor
Area of Science:
- Biochemistry
- Molecular Biology
- Genetics
Background:
- Renin is a key enzyme in the renin-angiotensin system, regulating blood pressure.
- Understanding renin's structure and regulation is crucial for cardiovascular research.
- Previous studies lacked detailed information on sheep renin's primary structure.
Purpose of the Study:
- To determine the complete cDNA sequence of the sheep renin precursor.
- To elucidate the structural features of sheep renin.
- To investigate the regulation of renin gene expression in sheep.
Main Methods:
- Construction and screening of a sheep kidney cDNA library.
- Nucleotide sequencing of cDNA clones.
- Polymerase chain reaction (PCR) amplification of the 5' region.
- Northern and Southern blot analyses.
Main Results:
- The sheep renin precursor is 400 amino acids long, with a leader and prosegment.
- Mature sheep renin shares 73% sequence identity with human renin.
- Renin mRNA is primarily found in the kidney and its levels increase with sodium depletion and adrenalectomy.
- Southern analysis indicates a single renin gene in sheep.
Conclusions:
- The primary structure of sheep renin precursor has been elucidated.
- Sheep renin gene expression is regulated by sodium balance and adrenal hormones.
- This study provides a foundation for further research into sheep renin's function and regulation.