Corrections

Bicho, Ana, and Christof Grewer. 2005. Rapid substrate-induced charge movements of the GABA transporter GAT1. Biophys. J. 89:211–231.

In the Fig. 8 legend, some of the kinetic parameters were not correct. We thank Dr. Donald D. F. Loo for pointing this problem out to us. The correct values are:

k₁₂₀ = 0.5 M⁻¹ ms⁻¹, k₂₁₀ = 0.01 ms⁻¹, z₁₂ = 0.9, k₂₃₀ = 10 M⁻¹ ms⁻¹, k₃₂₀ = 0.1 ms⁻¹, z₂₃ = 0.3, k₃₄₀ = 10,000 M⁻¹ ms⁻¹, k₄₃₀ = 1 ms⁻¹, z₃₄ = 0, k₄₅₀ = 1 ms⁻¹, k₅₄₀ = 1 ms⁻¹, z₄₅ = 0.2, k₅₆₀ = 0.3 ms⁻¹, k₆₅₀ = 1.5·10⁷ M⁻³ ms⁻¹, z₅₆ = 0.2, k₁₆₀ = 0.005 ms⁻¹, k₆₁₀ = 0.005 ms⁻¹, z₆₁ = −0.8, k₆₇₀ = 200 M⁻¹ ms⁻¹, k₇₆₀ = 20 ms⁻¹, z₆₇ = 0.01, k₇₈₀ = 0.4 ms⁻¹, k₈₇₀ = 0.02 ms⁻¹, z₇₈ = 0.005, k₈₁₀ = 50 ms⁻¹, k₁₈₀ = 10,000 M⁻¹ ms⁻¹, and z₈₁ = −0.215.

These revised kinetic parameters lead to simulations indistinguishable from those shown in Figs. 9 and 10. However, in Fig. 11, the y axis scale has to be multiplied by a factor of ∼10. Finally, it should be noted that the background currents in the simulations before GABA application were subtracted to allow for a better comparison of the simulated currents with the experimental traces.