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Gene Contents and Organization of a Mitochondrial DNA Segment of the Squid Loligo bleekeri

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Abstract:

The nucleotide sequence of a 9240-base pair DNA fragment of the mitochondrial (mt) genome of a squid, Loligo bleekeri, was determined, in which 8 protein and 14 tRNA genes were identified. The gene organization of the mt-genome exhibits a greater resemblance to the gene organization of arthropods and a chiton, Katharina tunicata, than to those of a mussel, Mytilus edulis, and land snails. A cloverleaf-like structure was observed between the genes for subunits 4 and 5 of NADH dehydrogenase (ND4 and -5), which is considered to have originated from histidine tRNA. It is presumed that this structure functions as a transcriptional punctuation signal for the maturation of the ND4 and ND5 mRNAs.

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Authors and Affiliations

  1. Department of Biological Sciences, Faculty of Bioscience and Biotechnology, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama 226-8501, Japan, , , , , , JP

    Junji Sasuga, Shin-ichi Yokobori, Masayuki Kaifu & Kazuya Nishikawa

  2. Department of Chemistry and Biotechnology, Graduate School of Engineering, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, , , , , , JP

    Takuya Ueda & Kimitsuna Watanabe

Authors
  1. Junji Sasuga
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  2. Shin-ichi Yokobori
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  3. Masayuki Kaifu
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  4. Takuya Ueda
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  5. Kazuya Nishikawa
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  6. Kimitsuna Watanabe
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Sasuga, J., Yokobori, Si., Kaifu, M. et al. Gene Contents and Organization of a Mitochondrial DNA Segment of the Squid Loligo bleekeri . J Mol Evol 48, 692–702 (1999). https://doi.org/10.1007/PL00006513

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  • DOI: https://doi.org/10.1007/PL00006513

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