title: Complete amino acid sequence of human placental 17 beta-hydroxysteroid dehydrogenase deduced from cDNA.
abstract: cDNA clones for 17 beta-hydroxysteroid dehydrogenase (17-HSD; EC 1.1.1.62) were isolated from a placental lambda gt11 expression library using polyclonal antibodies against placental 17-HSD. The largest cDNA contained 1325 nucleotides, consisting of a short 5'-noncoding segment, a coding segment of 987 nucleotides terminated by a TAA codon, and a 329 nucleotide long 3'-noncoding segment. The open reading frame encoded a polypeptide of 327 amino acid residues with a predicted Mr of 34853. The amino acid sequence of 23 N-terminal amino acids determined from purified 17-HSD agreed with the sequence deduced from cDNA. The deduced amino acid sequence also contained two peptides previously characterized from the proposed catalytic area of placental 17-HSD.
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: O
authors.initials: O
authors.lastname: Mäentausta
authors.forename: R
authors.initials: R
authors.lastname: Vihko
mesh_terms: D015067:17-Hydroxysteroid Dehydrogenases / Q000235:genetics*; D000595:Amino Acid Sequence; D001483:Base Sequence; D003001:Cloning, Molecular; D004247:DNA / Q000235:genetics*; D005260:Female; D006801:Humans; D008969:Molecular Sequence Data; D010920:Placenta / Q000201:enzymology*; D011247:Pregnancy; D011487:Protein Conformation; D015183:Restriction Mapping
chemical_list: D004247:DNA; D015067:17-Hydroxysteroid Dehydrogenases; C032690:3-alpha-(17-beta)-hydroxysteroid dehydrogenase (NAD(+))