title: Complementary DNA cloning and molecular evolution of opine dehydrogenases in some marine invertebrates.
abstract: The complete complementary DNA sequences of genes presumably coding for opine dehydrogenases from Arabella iricolor (sandworm), Haliotis discus hannai (abalone), and Patinopecten yessoensis (scallop) were determined, and partial cDNA sequences were derived for Meretrix lusoria (Japanese hard clam) and Spisula sachalinensis (Sakhalin surf clam). The primers ODH-9F and ODH-11R proved useful for amplifying the sequences for opine dehydrogenases from the 4 mollusk species investigated in this study. The sequence of the sandworm was obtained using primers constructed from the amino acid sequence of tauropine dehydrogenase, the main opine dehydrogenase in A. iricolor. The complete cDNA sequence of A. iricolor, H. discus hannai, and P. yessoensis encode 397, 400, and 405 amino acids, respectively. All sequences were aligned and compared with published databank sequences of Loligo opalescens, Loligo vulgaris (squid), Sepia officinalis (cuttlefish), and Pecten maximus (scallop). As expected, a high level of homology was observed for the cDNA from closely related species, such as for cephalopods or scallops, whereas cDNA from the other species showed lower-level homologies. A similar trend was observed when the deduced amino acid sequences were compared. Furthermore, alignment of these sequences revealed some structural motifs that are possibly related to the binding sites of the substrates. The phylogenetic trees derived from the nucleotide and amino acid sequences were consistent with the classification of species resulting from classical taxonomic analyses.
authors.affiliation: Laboratory of Marine Biochemistry, Graduate School of Agricultural Science, Tohoku University, Aoba-ku, Sendai 981-8555, Japan.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Kimura
authors.forename: Toshiki
authors.initials: T
authors.lastname: Nakano
authors.forename: Toshiyasu
authors.initials: T
authors.lastname: Yamaguchi
authors.forename: Minoru
authors.initials: M
authors.lastname: Sato
authors.forename: Tomohisa
authors.initials: T
authors.lastname: Ogawa
authors.forename: Koji
authors.initials: K
authors.lastname: Muramoto
authors.forename: Takehiko
authors.initials: T
authors.lastname: Yokoyama
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Kan-No
authors.forename: Eizou
authors.initials: E
authors.lastname: Nagahisa
authors.forename: Frank
authors.initials: F
authors.lastname: Janssen
authors.forename: Manfred K
authors.initials: MK
authors.lastname: Grieshaber
mesh_terms: D000594:Amino Acid Oxidoreductases / Q000235:genetics; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D016000:Cluster Analysis; D017931:DNA Primers; D018076:DNA, Complementary / Q000235:genetics; D019143:Evolution, Molecular; D008969:Molecular Sequence Data; D008974:Mollusca / Q000235:genetics*; D010088:Oxidoreductases / Q000235:genetics*; D010802:Phylogeny; D011077:Polychaeta / Q000235:genetics*; D017422:Sequence Analysis, DNA; D017385:Sequence Homology
chemical_list: D017931:DNA Primers; D018076:DNA, Complementary; D010088:Oxidoreductases; D000594:Amino Acid Oxidoreductases; C050564:tauropine dehydrogenase