Identification of High Molecular Weight Proteins in Squid Muscle by Western Blotting Analysis and Postmortem Rheological Changes

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The high molecular weight protein connectin (also called titin) in Japanese common squid (<I>Todarodes pacificus</I>) mantle muscle was identified by western blotting analysis with 3B9, the mouse anti-chicken skeletal muscle connectin monoclonal antibody. Similarly to vertebrate samples, there exists connectin in invertebrate squid mantle muscle, and the amino acid sequences are assumed to resemble those present in the A band of vertebrate connectin, judging by the specificity of 3B9. Moreover, the connectin in squid muscle migrated in this study as a closely spaced doublet of α and β (titins 1 and 2). Between 5 and 7 h post-mortem, the SDS PAGE patterns of the squid sample indicated a change of the doublet bands into a single β-connectin band. Simultaneously, the rheological properties of the squid muscle changed substantially. This degradation of α-connectin into β-connectin in the muscle can explain the critical change that occurs during the post-mortem tenderization of squid muscle.

収録刊行物

  • Bioscience, biotechnology, and biochemistry

    Bioscience, biotechnology, and biochemistry 68(5), 1119-1124, 2004-05-23

    公益社団法人 日本農芸化学会

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各種コード

  • NII論文ID(NAID)
    10013144890
  • NII書誌ID(NCID)
    AA10824164
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09168451
  • NDL 記事登録ID
    6957508
  • NDL 雑誌分類
    ZR7(科学技術--農林水産--農産) // ZR2(科学技術--生物学--生化学) // ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z53-G223
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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