title: Cloning and characterization of prostaglandin endoperoxide synthase-1 and -2 from the brook trout ovary.
abstract: Using a combination of reverse transcription-PCR and library screening, the cDNAs for prostaglandin endoperoxide synthase-1 (PGS-1) and 2 (PGS-2) were isolated from the brook trout ovary. The brook trout PGS-1 cDNA encodes for a 598 amino acid protein that is 69% identical to mammalian PGS-1. PGS-1 transcripts were observed in the ovary, spleen, gills, head kidney, trunk kidney, intestine, stomach, skin and heart. To our knowledge, this is the first characterization of a non-mammalian PGS-1 cDNA. The brook trout PGS-2 encodes for a 607 amino acid protein that is 69% identical to mammalian PGS-2 and was observed in the skin, gills, stomach and heart. PGS-2 transcripts were highly upregulated in the ovaries by the phorbol ester, phorbol-12-myristate-13-acetate, in combination with the calcium ionophore, A23187. However, PGS-2 was not observed in the ovary of brook trout undergoing natural oocyte maturation and ovulation.
authors.affiliation: University of Notre Dame, Department of Biological Sciences, P.O. Box 369, Notre Dame, IN 46556-0369, USA.
authors.forename: S B
authors.initials: SB
authors.lastname: Roberts
authors.forename: D M
authors.initials: DM
authors.lastname: Langenau
authors.forename: F W
authors.initials: FW
authors.lastname: Goetz
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D017931:DNA Primers / Q000235:genetics; D018076:DNA, Complementary / Q000235:genetics; D005260:Female; D007527:Isoenzymes / Q000235:genetics*; D008322:Mammals; D008969:Molecular Sequence Data; D010053:Ovary / Q000201:enzymology*; D011451:Prostaglandin-Endoperoxide Synthases / Q000235:genetics*; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D017386:Sequence Homology, Amino Acid; D013045:Species Specificity; D014018:Tissue Distribution; D014337:Trout / Q000235:genetics* / Q000378:metabolism*
chemical_list: D017931:DNA Primers; D018076:DNA, Complementary; D007527:Isoenzymes; D012333:RNA, Messenger; D011451:Prostaglandin-Endoperoxide Synthases