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Nucleotide sequence of the gene encoding murine tissue factor pathway inhibitor-2
Y Kazama1, S Kamei, J L Kuijper
1Department of Pathology, University of New Mexico Health Sciences Center, Albuquerque 87131-5301, USA.
Thrombosis and Haemostasis
|February 11, 2000
Summary
The murine Tissue Factor Pathway Inhibitor-2 (TFPI-2) gene structure was elucidated, revealing five exons and four introns. This research identified key regulatory elements in its flanking regions, crucial for understanding TFPI-2 gene expression.
Area of Science:
- Genomics
- Molecular Biology
- Biochemistry
Background:
- Tissue Factor Pathway Inhibitor-2 (TFPI-2), also known as placental protein 5, is an extracellular matrix-associated serine proteinase inhibitor.
- TFPI-2 comprises three tandem Kunitz-type domains.
Purpose of the Study:
- To isolate and determine the complete nucleotide sequence of the murine TFPI-2 gene.
- To analyze the structural organization and regulatory elements of the TFPI-2 gene.
Main Methods:
- Isolation of overlapping genomic clones from a lambda FIXII 129 SVJ mouse genomic library.
- Determination of the complete nucleotide sequence of the murine TFPI-2 gene.
- Analysis of exon-intron boundaries, flanking regions, and potential transcription factor binding sites.
Main Results:
- The murine TFPI-2 gene spans approximately 9.3 kilobases and consists of five exons and four introns.
- Exon-intron boundaries adhere to the GT-AG rule, with each Kunitz-type domain encoded by a single exon.
- The 5'-flanking region contains a TATA box, GC box, and CAAT boxes, along with candidate sites for cell-specific expression. The 3'-flanking region includes a potential polyadenylation site.
Conclusions:
- The identified gene structure and regulatory elements provide insights into the transcriptional regulation of TFPI-2.
- Understanding the genetic basis of TFPI-2 is essential for its role in placental, endothelial, and smooth muscle cell functions.