cDNA Cloning of Heat-inducible HSP70, a 70.6 kDa Heat Shock Protein, in Japanese Flounder <i>Paralichtys olivaceus</i>

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  • Yokoyama Yoshihiro
    Interdisciplinary Research Institute for Biosciences, Mukogawa Women's University
  • Hashimoto Hisashi
    Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University
  • Kubota Satoshi
    Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University
  • Kinoshita Masato
    Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University
  • Toyohara Haruhiko
    Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University
  • Sakaguchi Morihiko
    Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University
  • Tanaka Masaru
    Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University
  • Seikai Tadahisa
    Fisheries Research Station, Graduate School of Agriculture, Kyoto University
  • Kanamori Masao
    Interdisciplinary Research Institute for Biosciences, Mukogawa Women's University

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  • cDNA Cloning of Heat-inducible HSP70,a 70.6 kDa Heat Shock Protein,in Japanese Flounder Paralichtys olivaceus

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Abstract

Full-length cDNA for a 70.6 kDa heat-inducible heat shock protein (HSP70), a member of the HSP70 family, was isolated from a cDNA library of cultured cells in early passage originated in Japanese flounder embryos (JFE cells). It has a single ORF of 1920 bp that encodes a protein of 70.6 kDa. Japanese flounder HSP70 contains an EEVD peptide motif at C-terminal end which is a common feature of the cytosolic HSP70 family. Japanese flounder HSP70 is 86.0%, 83.8%, and 83.6% identical in primary structure to chinook salmon HSP70, bovine HSP70, and human HSP70, respectively. Japanese flounder HSP70 is also 83.6% identical to Japanese flounder HSC71. These results suggest that the amino acid sequence of the cytosolic HSP70 family, HSP70 and HSC71, has been highly conserved among vertebrates. Northern blot analysis showed that HSP70 mRNA was induced with heat shock treatment in the JFE cells in early passage.

Journal

  • Fisheries science

    Fisheries science 64 (6), 964-968, 1998

    The Japanese Society of Fisheries Science

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