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. 2002 Sep;120(3):349–368. doi: 10.1085/jgp.20028620

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Copyright © 2002, The Rockefeller University Press

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Figure 1. — Binding reactions for the myoplasmic constituents included in the simulations; the values of the rate constants are specified in Table III. (A) Equivalent reaction of Ca²⁺ with ATP in the presence of 1 mM free [Mg²⁺]. (B) Multistate reaction of Ca²⁺ and protein (Pr) with fluo-3 (Fluo). (C) Competitive reaction of Ca²⁺ and Mg²⁺ with parvalbumin (Parv). (D) Four-state reaction for the binding and transport of Ca²⁺ by the SR Ca²⁺ pump (E). (E) One-step reaction between Ca²⁺ and troponin (Trop), used in Model 1. (F) Two-step reaction between Ca²⁺ and troponin, used in Model 2.