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Structure and sequence analysis of the human activin beta A subunit gene
1Institute of Applied Biochemistry, University of Tsukuba, Ibaraki, Japan.
DNA Sequence : the Journal of DNA Sequencing and Mapping
|January 1, 1991
Summary
This study analyzes the human activin beta A subunit gene, detailing its structure and regulatory elements. Findings reveal conserved sequences in the 3'-flanking region, suggesting functional importance for activin gene regulation.
Area of Science:
- Molecular Biology
- Genetics
- Gene Regulation
Background:
- The activin beta A subunit is a key component of the activin protein family, involved in various biological processes.
- Understanding the genomic structure and regulatory elements of the activin beta A subunit gene is crucial for deciphering its expression control.
Purpose of the Study:
- To characterize the genomic structure of the human activin beta A subunit gene.
- To identify and analyze regulatory sequences in the 5 eal- and 3 eal-flanking regions of the gene.
Main Methods:
- Cloning of genomic DNA
- Restriction endonuclease mapping
- Southern blotting
- DNA sequencing
- Dot matrix analysis
Main Results:
- The human activin beta A subunit gene consists of two exons separated by a 9-kb intron.
- Identified regulatory elements in the 5 eal-flanking region include TATA, CCAAT, and CT-stretch sequences.
- The 3 eal-flanking region contains multiple polyadenylation signals, ATTTA motifs, a CA element, an AP-1 binding site, and SV40 enhancer core elements.
- High sequence conservation was observed between human and rat 3 eal-flanking regions.
Conclusions:
- The identified regulatory elements likely play a role in the transcriptional control of the activin beta A subunit gene.
- The conserved 3 eal-flanking sequences suggest functional significance in gene regulation across species.