title: 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.
abstract: 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.
authors.affiliation: Department of Clinical Chemistry, University of Oulu, Finland.
authors.forename: H
authors.initials: H
authors.lastname: Peltoketo
authors.forename: V
authors.initials: V
authors.lastname: Isomaa
authors.forename: R
authors.initials: R
authors.lastname: Vihko
mesh_terms: D015067:17-Hydroxysteroid Dehydrogenases / Q000737:chemistry / Q000235:genetics*; D000595:Amino Acid Sequence; D001483:Base Sequence; D001665:Binding Sites; D003001:Cloning, Molecular; D016384:Consensus Sequence; D004247:DNA / Q000737:chemistry*; D005091:Exons; D006801:Humans; D008969:Molecular Sequence Data; D011401:Promoter Regions, Genetic; D012091:Repetitive Sequences, Nucleic Acid; D015183:Restriction Mapping; D014157:Transcription Factors / Q000378:metabolism
chemical_list: D014157:Transcription Factors; D004247:DNA; D015067:17-Hydroxysteroid Dehydrogenases