Human estrogen sulfotransferase gene (STE): cloning, structure, and chromosomal localization
1Department of Pharmacology, Mayo Medical School, Rochester, Minnesota 55905, USA.
Genomics
|September 1, 1995
Summary
Researchers characterized the human estrogen sulfotransferase (EST) gene, STE, detailing its structure and chromosomal location. This provides a foundation for studying how EST is regulated in human tissues.
Area of Science:
- Biochemistry
- Genetics
- Molecular Biology
Background:
- Estrogen metabolism involves sulfation, a critical pathway.
- Human liver estrogen sulfotransferase (EST) cDNA has been previously cloned.
- Understanding EST gene regulation is vital for human health.
Purpose of the Study:
- To determine the structure and chromosomal localization of the human EST gene (STE).
- To facilitate molecular genetic studies on the regulation of EST in humans.
Main Methods:
- Gene structure determination (exons, introns, 5'-flanking region).
- Chromosomal mapping using fluorescence in situ hybridization (FISH).
- Analysis of exon-intron splice junction conservation with related genes.
Main Results:
- The STE gene spans approximately 20 kb and comprises 8 exons.
- Exon-intron splice junctions show conservation with human phenol ST (PST) and rat PST genes.
- STE was mapped to human chromosome 4q13.1.
- The 5'-flanking region contains CCAAT and TATA sequences, with a TATA box aligning with the transcription start site.
Conclusions:
- The cloning and structural characterization of the STE gene are complete.
- This provides the necessary tools for investigating molecular genetic mechanisms regulating EST in human tissues.
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