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Eur J Biochem. 1992 Oct 1;209(1):459-66.

Genomic organization and DNA sequences of human 17 beta-hydroxysteroid dehydrogenase genes and flanking regions. Localization of multiple Alu sequences and putative cis-acting elements.

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  • 1Department of Clinical Chemistry, University of Oulu, Finland.


Genomic 17 beta-hydroxysteroid-dehydrogenase (17-HSD) clones were isolated from a human leucocyte genomic library using cDNA encoding human placental 17-HSD as a probe. The overlapping fragments spanned more than 21 kbp containing the duplications, 6.2 kbp of each, as well as 7 kbp upstream and 1.6 kbp downstream from the duplicated sequences. 17 complete and eight partial Alu elements were clustered in this area, covering about 30% of the region, including the borders of the duplications. Each duplication contained a 17-HSD gene and a conserved region of 1.56 kbp with 98% intercopy similarity. The exon structure of the 17-HSD gene II corresponded to the known cDNA species, but both genes contained a possible promoter region with TATA, GC and inverse CAAT boxes. The 5' flanking regions contained sequences similar to the consensus sequences of cis-acting elements, defined as regulators of 17-HSD gene expression. These putative sequences included estrogen and progesterone/glucocorticoid-response elements and a cyclic-AMP regulatory element.

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