"myofi" - 1 õppematerjal

Liha töötlemine

strength, requiring an ionic strength greater estimated to have somewhere in the neigh- than 0.3 to be extracted from muscle. For this borhood of 5.8 × 104 to 6.6 × 104 sarcomeres reason, they are often referred to as “salt- per muscle fiber, while the soleus has been soluble” proteins. Myofibrillar proteins make estimated to have approximately 1.4 × 104 up approximately 50–60% of the total extract- (Wickiewicz et al. 1983). Adjacent myofi- able muscle proteins. On a whole muscle brils are attached to each other at the Z-line 8 Chapter 1 by proteinacious filaments, known as inter- each) and two sets of light chains (14,000– mediate filaments. Outermost myofibrils are 20,000 daltons). One of the light chains is attached to the cell membrane (sarcolemma) required for enzymatic activity, and the other by intermediate filaments that interact not has regulatory functions.