title: Cloning of bovine preproendothelin-2 cDNA and organ distribution of transcripts.
abstract: Endothelin-2 (ET2), which was originally identified in human, is a bioactive peptide of 21 amino acids with strong vasoconstrictive and pressor effects. Here we report the cDNA cloning and characterization of bovine preproendothelin-2 (PPET2), the precursor form of ET2. The bovine cDNA encodes 177 amino acids of the PPET2 polypeptide, in which a 21-amino acid mature ET2 peptide and a 16-amino acid ET2-like peptide as well as a 23-amino acid putative signal peptide were found. The bovine ET2-like peptide sequence was missing a dibasic amino acid pair at the C-terminal, in contrast to human, mouse and rat, for which the ET2-like sequence is flanked by dibasic pairs at both the N- and C-terminals. Gene expression analysis by RT-PCR showed that the transcript is expressed in various organs including heart, lung, liver, kidney, gastrointestinal tract, uterus and ovary, but not in spleen. Within the gastrointestinal tract, gene expression was detected in rumen, a ruminant-specific digestive organ, as well as stomach, duodenum and colon.
authors.affiliation: Department of Toxicology, School of Veterinary Medicine and Animal Sciences, Kitasato University, 35-1, Higashi 23-bancho, Towada, Aomori 034-8628, Japan. uchide@vmas.kitasato-u.ac.jp
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Uchide
authors.forename: Yuki
authors.initials: Y
authors.lastname: Fujimori
authors.forename: Kyosuke
authors.initials: K
authors.lastname: Temma
authors.forename: Takushi
authors.initials: T
authors.lastname: Sasaki
authors.forename: Kaname
authors.initials: K
authors.lastname: Saida
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002417:Cattle / Q000235:genetics* / Q000378:metabolism; D002874:Chromosome Mapping; D018076:DNA, Complementary / Q000235:genetics; D016232:Endothelins / Q000235:genetics*; D015870:Gene Expression; D020869:Gene Expression Profiling; D008969:Molecular Sequence Data; D009841:Oligonucleotides / Q000235:genetics; D009928:Organ Specificity; D011498:Protein Precursors / Q000235:genetics*; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid
chemical_list: D018076:DNA, Complementary; D016232:Endothelins; D009841:Oligonucleotides; D011498:Protein Precursors; C099648:preproendothelin 2