title: Multiple gene organization of pufferfish Fugu rubripes tropomyosin isoforms and tissue distribution of their transcripts.
abstract: The Japanese pufferfish, torafugu (Fugu rubripes), has a haploid genome of about 400 Mb in size, which has been sequenced to approximately 90% coverage. Here we identified six Fugu tropomyosin (TPM) gene sequences by using the BLASTN program and the sequence of the white croaker TPM1 gene in our collection against the draft assembly of the Fugu genomic sequence database. TPM2, TPM3 and TPM4 genes were identified together with a set of two potentially duplicated genes of TPM1 (TPM1-1 and TPM1-2) as described in our previous report and TPM4 (TPM4-1 and TPM4-2) newly found in this study. The expression patterns of these Fugu TPM genes were determined by reverse transcription polymerase chain reaction (RT-PCR). A phylogenetic tree was constructed using the deduced amino acid sequences, which were encoded by the exons common to all vertebrate TPM genes. This indicated that the Fugu TPM1 and TPM4 genes had resulted from a gene duplication in the fish evolutionary lineage.
authors.affiliation: Laboratory of Aquatic Molecular Biology and Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo, 113-8657, Japan.
authors.forename: Takuya
authors.initials: T
authors.lastname: Toramoto
authors.forename: Daisuke
authors.initials: D
authors.lastname: Ikeda
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Ochiai
authors.forename: Shinsei
authors.initials: S
authors.lastname: Minoshima
authors.forename: Nobuyoshi
authors.initials: N
authors.lastname: Shimizu
authors.forename: Shugo
authors.initials: S
authors.lastname: Watabe
mesh_terms: D017398:Alternative Splicing; D000595:Amino Acid Sequence; D001483:Base Sequence; D003001:Cloning, Molecular; D018076:DNA, Complementary / Q000737:chemistry / Q000235:genetics; D030561:Databases, Nucleic Acid; D020224:Expressed Sequence Tags; D020869:Gene Expression Profiling; D008969:Molecular Sequence Data; D010802:Phylogeny; D020033:Protein Isoforms / Q000235:genetics; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D017422:Sequence Analysis, DNA; D023741:Takifugu / Q000235:genetics*; D014335:Tropomyosin / Q000235:genetics*
chemical_list: D018076:DNA, Complementary; D020033:Protein Isoforms; D012333:RNA, Messenger; D014335:Tropomyosin