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− | Contractile (reversibly shortening) basic elements of [[Muskel/en|muscle]], composed of thin filaments (5nm diameter) with [[ | + | Contractile (reversibly shortening) basic elements of [[Muskel/en|muscle]], composed of thin filaments (5nm diameter) with [[Protein/en|protein]] [[Aktinfilamente/en|actin]], [[Troponin/en|troponin]] and [[Tropomyosin/en|tropomyosin]], and of thick filaments (10 nm D) of [[Myosinfilamente/en|myosin]]. The energy source for the contraction of the myofibril is [[ATP/en|ATP]]. |
https://en.wikipedia.org/wiki/Myofibril | https://en.wikipedia.org/wiki/Myofibril |