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. 2006 Jun;127(6):719–735. doi: 10.1085/jgp.200509438

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Copyright © 2006, The Rockefeller University Press

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Figure 14. — The total P_open and the ACh-diliganded, choline-diliganded, and heterodiliganded fractions. This figure is similar to Fig. 13 but, here, the contributions of the three open configurations to the total P_open are expressed as ratios (fractions). (A) Total P_open (the same plot as in Fig. 13 A). (B) ACh-diliganded fraction = POA₂/P_open. (C) Choline-diliganded fraction = POB₂/P_open. (D) Heterodiliganded fraction = POAB/P_open. The maximum contribution of ACh-choline heterodiliganded openings to the total P_open is ∼50%, and this fraction decreases steeply outside a narrow range of ACh-choline combinations.