title: Existence of two isoforms of extracellular signal-regulated kinase in fish.
abstract: Full-length cDNAs for extracellular signal-regulated kinases (ERK1 and ERK2) were isolated from a carp ovary cDNA library. The deduced amino acid sequences of carp ERK1 (cERK1) and ERK2 (cERK2) exhibited high degrees of homology to the known sequences of the ERK group. Northern blot analysis showed that cERK1 mRNA was not expressed in a tissue-specific manner, though the level of expression of cERK2 mRNA varied among tissues. Western blot analysis of the brain, kidney, and ovary confirmed the expression of cERK1 and cERK2 in carp. Our findings indicate that two isoforms of ERK, ERK1 and ERK2, exist in fish.
authors.affiliation: Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Hashimoto
authors.forename: Y
authors.initials: Y
authors.lastname: Yokoyama
authors.forename: Y
authors.initials: Y
authors.lastname: Matsuo
authors.forename: H
authors.initials: H
authors.lastname: Toyohara
authors.forename: M
authors.initials: M
authors.lastname: Kohno
authors.forename: M
authors.initials: M
authors.lastname: Sakaguchi
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D017871:Calcium-Calmodulin-Dependent Protein Kinases / Q000032:analysis / Q000378:metabolism*; D002347:Carps; D007527:Isoenzymes / Q000032:analysis / Q000378:metabolism*; D019950:Mitogen-Activated Protein Kinase 1; D048052:Mitogen-Activated Protein Kinase 3; D020928:Mitogen-Activated Protein Kinases; D008969:Molecular Sequence Data; D016415:Sequence Alignment; D017421:Sequence Analysis; D015398:Signal Transduction
chemical_list: D007527:Isoenzymes; D017871:Calcium-Calmodulin-Dependent Protein Kinases; D019950:Mitogen-Activated Protein Kinase 1; D048052:Mitogen-Activated Protein Kinase 3; D020928:Mitogen-Activated Protein Kinases