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Rebello, Conrad A.; Ludescher, Richard D. . (1999). Differential Dynamic Behavior of Actin Filaments Containing Tightly-Bound Ca <sup>2+</sup> or Mg <sup>2+</sup> in the Presence of Myosin Heads Actively Hydrolyzing ATP <sup>†</sup>. Biochemistry, 38(40), 13288–13295. doi:10.1021/bi990348a 
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