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The sequence of a rat cDNA encoding thrombopoietin
1Pharmaceutical Research Laboratory, Kirin Brewery Co., Ltd., Gunma, Japan.
Gene
|June 9, 1995
Summary
Researchers identified rat thrombopoietin (TPO) using liver cell DNA. The study found significant similarities between rat TPO and TPO from other species, particularly in its initial amino acid sequence.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Thrombopoietin (TPO) is a key regulator of platelet production.
- Understanding species-specific TPO is crucial for comparative biology and drug development.
Purpose of the Study:
- To isolate and characterize rat thrombopoietin (TPO) cDNA.
- To determine the amino acid sequence of rat TPO.
- To compare rat TPO with TPO from other species.
Main Methods:
- Isolation of overlapping cDNA clones from rat liver-derived cell line cDNA libraries.
- Determination of nucleotide sequences of the isolated clones.
- Deduction of the amino acid sequence of rat TPO.
Main Results:
- Successfully isolated and sequenced cDNA clones encoding rat TPO.
- The deduced rat TPO consists of 326 amino acids.
- Rat TPO exhibited significant sequence homology to known TPO from other species, notably in the N-terminal region.
Conclusions:
- Rat TPO shares conserved structural features with TPO from other species.
- The N-terminal sequence appears to be a highly conserved region of TPO across species.
- This characterization provides a basis for further functional studies of rat TPO.
