Studies on the Myofibrillar Proteins -Part III. Post-mortem Changes in Troponin-Tropomyosin Complexes-

근원섬유단백질에 관한 연구 -제3보 Troponin-Tropomyosin Complex의 변화-

The procedures for the Preparation of regulatory proteins of myofibrill were developed and postmortem changes in the regulatory proteins of myofibrill were investigated. Both the physiological property and molecular shape of ${\alpha}-actinin$ from pre-rigor muscle did not differ from those of ${\alpha}-actinin$ from post-rigor muscle. On the other hand, although tropomyosin of myofibril changed negligibly during the post-mortem storage of muscle, troponin of myofibril changed remarkably.

근원성유로 부터 근수축조절단백질들을 추출정제하고 저장중의 변화를 연구하여 다음과 같은 결과를 얻었다. 1. ${\alpha}-actinin$은 그 분자형(分子形)이나 생물활성(生物活性)에 아무런 변화도 일으키지 않았다. 2. 근육저장중에 근원섬유의 troponin-troponin complex의 함량은 감소되고 있으며 troponin-tropomyosin complex의 troponin함유비(含有比)는 낮아지고 있다.