Nakano, we study the microscopic motion of actin myosin system including the motion of the G-actin. Our model is composed of an inclined spring (rod), a myosin head, a myosin filament and G-actins. We discuss the stochastic resonance between the myosin head and random noise. The results ...
we report measurements of the sliding distance of an actin filament induced by a myosin crossbridge during one ATP hydrolysis cycle in an unloaded condition. We used single sarcomeres from which the Z-lines, structures which anchor the thin filaments in the sarcomere, had been completely removed...
An actin filament sliding on myosin molecules in the presence of an extremely low concentration of ATP exhibited a staggered movement. Longitudinally sliding movement of the filament was frequently interrupted by its non-sliding, fluctuating movements both in the longitudinal and transversal directions. ...
myosin filament happens per six actin filaments. appearance actin filaments have lighter striations. myosin filaments have dark striations. sliding slide into the h-zone during contraction. do not slide during contraction. ends actin filaments are free at one end. myosin filaments are free at both ...
From these results we conclude that myosin in the intestinal cell may not only be involved in a short range sliding-filament type of motility, but may also play a purely structural role as a long range cross-linker between microvillar rootlets. 展开 ...
Modulation of Actin Filament Sliding by Mutations of the SH2 Cysteine inDictyosteliumMyosin II The cysteine residue called SH2 in the skeletal myosin heavy chain is conserved among various species. Cys 678 inDictyosteliummyosin II is equivalent to SH... Yoshikazu Suzuki and Reiko Ohkura and Seiryo...
Importantly, these forces are always directed such that they increase the overlap lengths between actin filaments in the bundle and, consequently, result in the contraction of the filament bundle. Anillin couples with actin disassembly to generate directed filament sliding As actin depolymerisation is ...
Which is not involved in the sliding filament theory? A. myosin B. actin C. tropomyosin D. troponin E. all of them are involved Which of the following is a role for ATP in skeletal muscle contraction? A. to allow calcium to move from its storage site into the muscle cell's cytoplasm...
Using a group of muscles (triceps and brachialis), explain their contraction using the sliding filament mechanism; noting which muscle is an antagonist, which muscle is an agonist and a synergist. Muscle fibres can be divided into slow twitch (type 1) and Does the en...
This binding implies a physical mechanism for communicating the relative sliding between thick and thin filaments that does not involve myosin and which could modulate the contractile process. 展开 关键词: C-protein sarcomere structure thick filament structure cardiac muscle regulation cardiac disease ...