Studies on Myofibrils from the Stored Muscle

DOI 被引用文献2件 オープンアクセス

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タイトル別名
  • Part I. Post-mortem Changes in Adenosine Triphosphatase Activity of Myofibrils from Rabbit Muscle

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説明

Adenosine triphosphatase (ATPase) activity of myofibrils isolated from fresh muscle and the muscle stored at 4°C have been measured.<br> An increase in Mg-activated ATPase activity of myofibrils was caused by lengthened homogenization.<br> With the progress of aging of muscle, Mg-activated ATPase activity of myofibrils increased remarkably.<br> When myofibrils from pre-rigor and rigor muscle in 0.16M KCl were treated with 0.6M KCl18mM Tris-maleate solution (pH 7.0), Mg-activated ATPase activity of myofibrils at low ionic strength increased markedly. However, the Mg-activated ATPase activity of the myofibril isolated from the muscle stored at 4°C for 8 days (8-myofibril) increased slightly after the similar treatment.<br> The dependence of myofibrillar ATPase activity on KCl concentration became greater with the progress of aging of muscle.<br> These results may show that, as long as ATPase activity and the dependence of ATPase activity on KCl concentration are concerned, 8-myofibril is the most similar to the isolated actomyosin among myofibrils, although actomyosin in muscle may exist in a different form from that in solution. It is suggested that, with the progress of aging, the structural alteration of myofibril occurred and the myofibril became more susceptible to ATP-induced transformation.

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詳細情報 詳細情報について

  • CRID
    1390282681444662144
  • NII論文ID
    130003523288
  • DOI
    10.1271/bbb1961.34.1765
  • COI
    1:CAS:528:DyaE3MXktFOjtLk%3D
  • ISSN
    18811280
    00021369
    http://id.crossref.org/issn/00021369
  • 本文言語コード
    en
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • 抄録ライセンスフラグ
    使用不可

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