Localization of paratropomyosin in chicken skeletal muscle myofibrils and its behavior during postmortem storage of muscles revealed by immunoelectron microscopy

Akihito Hattori, S. Fujimoto, T. Nishimura, Ryuichi Tatsumi, J. Wakamatsu, T. Ito

Research output: Contribution to journalArticle


Paratropomyosin is a minor myofibrillar protein which in freshly prepared myofibrils is exclusively localized at the A-I junction region of sarcomeres. We investigated the ultrastructural localization of paratropomyosin in intact and postrigor myofibrils by immunoelectron microscopy. Paratropomyosin was localized as two distinct stripes at the A-I junction in intact myofibrils. It also was localized at the position corresponding to the original A-I junction in thick filament-free myofibrils (I-Z-I brushes). However, following postmortem storage, paratropomyosin was found broadly distributed in thin filaments of myofibrils.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalJournal of Muscle Foods
Issue number1
Publication statusPublished - Jan 1 2003
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Food Science

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