Figure 6.
![Figure 6. Ca2+ dependence of the conductance Hill energy in Scheme 4. WH[g] versus V is plotted for [Ca2+]i = 10−3 to 103 µM (step size = 1.59×). The dashed lines are the four (V,μ) asymptotes, given by WH[g]V(−)μ(−) = −ΔGL + ΔqLV, WH[g]V(+)μ(−) = −(ΔGL + 4ΔWD) + ΔqLV, WH[g]V(−)μ(+) = −(ΔGL + 4ΔWC) + ΔqLV, and WH[g]V(+)μ(+) = −(ΔGL + 4ΔWC + 4ΔWD) + ΔqLV. The height differences between the asymptotes are −4ΔWC (short solid arrows) and −4ΔWD (longer dotted arrows).](https://cdn.rupress.org/rup/content_public/journal/jgp/141/1/10.1085_jgp.201210859/4/jgp_201210859_fig6.jpeg?Expires=1773536021&Signature=bLpMfgRn89dzNTtLZMG0WfDNE4twdrEhFW7yhc0-w621T0HkuMG3MShwplfVfc4jHpMoFVY-3BJy3iEr1seDKOO7ZR~cZVFd8UzIxASPHZv81REoHYucI6WMRybgoRNuG3dWPkiKgqZg9cd2E3dYPd8hKP8PVTHTSp8Dp9~tu8TLKha2ByvmzVWYkonKfUMDO-9rMIdEssrXyjeGeO-y6WENHS-i-IbI2kvR2iWpg75B4xxYyTM7TPvxD7wvi5RjTdJOOKE2EJ9rFZavBoWgqTglikBwLrsRk6gL-fu4qma~vBjwte5HBYAu~VlETu-fPXbS411FMIhqx-E~IRGrqw__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Ca2+ dependence of the conductance Hill energy in Scheme 4. WH[g] versus V is plotted for [Ca2+]i = 10−3 to 103 µM (step size = 1.59×). The dashed lines are the four (V,μ) asymptotes, given by WH[g]V(−)μ(−) = −ΔGL + ΔqLV, WH[g]V(+)μ(−) = −(ΔGL + 4ΔWD) + ΔqLV, WH[g]V(−)μ(+) = −(ΔGL + 4ΔWC) + ΔqLV, and WH[g]V(+)μ(+) = −(ΔGL + 4ΔWC + 4ΔWD) + ΔqLV. The height differences between the asymptotes are −4ΔWC (short solid arrows) and −4ΔWD (longer dotted arrows).
